I think the last b-body Pontiac to have a real Pontiac engine was in 1980 with the 301. I have a 455 to put in my 1980 wagon. No headers were made for this application. However, since all Pontiac engines have the same external dimensions, I'm thinking that a set of headers from an earlier Trans Am should work. Certainly my wagon would have more clearance room than a TA. a. has anyone tried this? b. has anyone done this engine swap and what did you use?