i have a 66 vista cruiser putting a 455 in it the 455 is coming out of a 73 cutlass just wondering if the headers will fit in the VC if u can help i would appreciate the help

 

Look through the online catalogs - they'll determine a difference, is there is one.
GM A body frames were different, depending on the years, but I'm not familiar with '73 + up.

 

Well, the 1966 442 had a 400 engine in it. I believe the engine compartment on the Vista Cruiser is the same as the 442. Externally, the 400 and 455 should be the same as far as exhaust goes. So following that train of thought you should be fine with a set made to fit the 1966 442. John

 

Yes, you can put headers on the 455 in a 66. Read the notes on whichever headers you choose for stipulations.