I own a 1967 chevelle malibu, there is not a build sheet. Here is what the car was equiped with
at the time of purchase:

327/300hp engine
M21 4spd
Console w/clock
Factory 4 seasons air
Tinted glass (all)
Bucket seats
4 way power bucket seat (driver's)
3 spoke aluminum wood steering wheel
Rear antenna
guage package
vanity mirror w/light (passenger)
vinyl roof
AM push button radio
dual mirors (chrome)

Some of these are more rare then others of course.
how do i get more info on the cars original equipment with only a vin number and trim tag?

Also try posting your trim tag in the Tag Team forum. Also, where are you in NY
Chris

I would think the power bucket seat is the least common option on your car. There are some production numbers for that option that indicate how many were installed in all Chevelle models with bucket seats. I'll look it up later and edit this unless someone beats me to it. The M21 (Muncie close ratio) is not expected, and may be more uncommon, given your 300HP engine and A/C. Your Muncie could be a replacement for the original Saginaw 4-spd (would have been called a M20). Muncies usually were installed behind the big blocks and the L79. Saginaws would be used with the other small block engines. A close ratio transmission would have had a rear end ratio of 3.55 or numerically higher. Wide ratio 4-spds (M20 Muncie or Saginaw) were more common originally with rear gears in the low 3s or lower. Neat car.

I dont remember the saginaw being called a M20.Muncie has a M20 wide ratio 4 speed that usually is put behind small blocks and may have been put behind some big blocks.I have seen big block cars with the close ratio muncie (M21 or M22) with the 3:31 gear in it.

Well, I am confused by the power seat info I found. In 1966 there were two options; A41 for the power bench seat and A46 for the power bucket seat. My reference shows only the A41 option in 1967. I don't know if this option includes both bench and bucket this year or if the A46 information is missing. Maybe someone with more information about 67s will chime in. But, anyway, my reference shows only 889 A41 options that year. In 1966, A41 options numbered 938 and A46 options numbered 587. So the power seats are indeed uncommon.

I dont remember the saginaw being called a M20. The assembly manual shows both Muncie and Saginaw as M20. If you were to find a build sheet or window sticker, M20 could refer to either, and the difference would probably be a exception code after the M20.

A difference between an original Muncie and a Saginaw would be the location of the speedo cable. A Muncie in 1967 would have a passenger side cable with retaining clips under the passenger floor and entry into the passenger toe board. A Saginaw speedo cable would have retaining clips under the driver floor and enter in the normal location under the steering column.

The Chevelle Features and Specifications Manual for 1967 states that power seats are not offered with floor shift transmissions or bucket seats or on base 300 series cars.
In 1966 I see that power seats were offered on the driver's bucket seat (no mention of any transmission restrictions), plus it was also available on bench seats (no floor shift transmission allowed).
I have seen people combine the power bench (owner added) with a 4-speed but they couldn't have the seat low and foreward if the correct floor hump was in place.
The L30 327 was rated at 275 horses and would use the M20 Saginaw in Chevelles, while the L79 327 (325 horse) used an M20 Muncie or M21 Muncie (also the h.d. 3-speed could be ordered).
On Chevelles, Camaros and fullsize Chevies in 1967/68, the L30 came with a 10-bolt rear unless a factory 4-speed (Saginaw) was ordered, then it got the 12-bolt. This was not generally spelled out on drivetrain charts, but it was a fact. I don't know if Chevy also did that in 1966.