This carb is currently sitting on a Chevy 350 (30 over) the previous owner put in my 69 gs. It’s an AED 750 HP. It functions fine but is too much carb for an iron headed Chevy 350 with a mild cam. The previous owner spent 600 plus on this carb alone. I’m debating trying to use it on my 455 that I’m eventually going to swap in. The 455 would be mildly built (mild cam, aluminum heads if budget allows or cleaned up small valve 70 heads, ta headers, 2 1/2 exhaust etc.). Short block is a low mileage 70 but will need to be balanced due to coming out of an automatic car and going into a manual car. My other options are a 70 q jet off this same low milage engine. It’s in great shape but sat for years so will need a rebuild. I also have a q jet from a 75 455 that will definitely need a rebuild.