hey guys have a question. was gonna remove my 350 tranny and install a 400turbo but need driveshaft, but buddy told me that i can use the same 350 shaft and change the yolk. if so is there any else i would need to change.

Have a look at the dimensions -note the mount and overall length
http://www.tciauto.com/Products/TechInfo/trans_dims.asp

thanks for the link i will do some measuring and part searching. thanks again

hey mike quick question what does the chart want to indicate by C tailshaft and D tailshaft?

It's giving dimensions for the trans pic at the top:
C is from the bell housing flange to the trans mount
D is the spread for the trans bolt's

ok so then is not indicating a different type of tailshaft, cause that is what it seem liked but i might have read it wrong.

A - B would be the tail housing length.