I'm thinking about putting a crate engine in my 68 RS. Has anybody use a GM part # 12499529? It’s a 350 with 290 HP. I have an Edelbrock performer aluminum intake and 600 cfm Edelbrock carb with headers. I know its low compression but that's ok for my use (not a big race fan) I'm just looking for reliability and a little performance. The 327 that is in it needs too much work and has Fuelie heads that a machine shop is telling me need about $800 of work. If it were a #'s car I would spend what ever it took to get it running, but it's not.