If you wanted my opinion again I would say go with it the edelbrock manifold is 205 to 210 hundred alone I have bought headers for like 230 or 240 that was the cheap black kind.My heads are 71 heads and 73 might be different but I have been offered up to 650 for my heads alone so I gurantey you,you would get more than 200 hundred out of everything.I know a guy that has some rebuilbt clevelands and he wants 2500 for the engines.So I bet you could find somebody that has a mustang and would buy everbit of it.But then again this is just what I have put into mine and know about.