might as well buy something with newer tech. only thing i'll suggest is to keep it small,and stay with a head with the exhaust ports in the stock location. i have canfields with raised exhaust, and it does create header fitment problems. they flow very well though.

 

Don't feel too bad about the heads just about any other head is better unless you spend a fortune at the porters.

 

i don't think i agree with this statement, but most everyone here likes the oval port stuff. so i guess your building a 427 ? my old builder runs 10 flat with the 188 castings and a healthy solid roller in a stock bore 454 in a 65 chevelle drag car. afr or brodix are pretty much king of the hill. brodix race rites or afr 305's would fit the bill . i'm surprised that no one has chimed in ,but my above statement should stir something up . lol sometimes you gotta give em something to argue about.

 

RaceRite rectangle ports, paint em orange!!!