I wouldn't personally do this, but have no problem with someone else doing this. It is their car to do whatever they want with it. I will however 100% garrantee that if you went on a Classic Camaro/Firebird forum and said you wanted to do a Hemi swap into one, you would get pretty much the same responses. A majority of the comments would be negative, a few would "tolerate" it, and couple would actually try and give useful advise to help you out.