A500 in a 1970 A Body
I'm doing a 518 into my 69 Dart. It does require some modification to the tunnel and the tranny cross-member. The A500 is basically a 904 with OD and isn't any stronger unless a LOT of money is spent. The 518 is based on the 727 and with minor mods will handle 450-500 HP. If you are squemish about cutting up your A body then don't attempt it. On the other hand, if you plan and do a bunch of mockups you can make it look pretty decent. Here's some pics of mine in progress and in the final stage ready to put the drive train in. The engine is a Magnum based 408 stroker, MP-EFI..
Larry
I'm doing a 518 into my 69 Dart. It does require some modification to the tunnel and the tranny cross-member. The A500 is basically a 904 with OD and isn't any stronger unless a LOT of money is spent. The 518 is based on the 727 and with minor mods will handle 450-500 HP. If you are squemish about cutting up your A body then don't attempt it. On the other hand, if you plan and do a bunch of mockups you can make it look pretty decent. Here's some pics of mine in progress and in the final stage ready to put the drive train in. The engine is a Magnum based 408 stroker, MP-EFI..
Larry