As angela said - numbers matching - it is very much a keeper...
Side pipes - looks like original knock-offs on one side (find out where the other 2 are, and the other pipe), see if the front bumper and other pieces are nearby as well. Engine shot is a 327 - and very much the correct set in for that year... Interior looks decent - got gauges, knobbies, could be a 4-speed.. hard to tell. Interior badging - correct steering wheel....
Go, look, maybe you get a screamin' deal...
Remember-they make everything for these cars - it isn't like you are going to have to go searching everywhere for a taillight....