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I was thinking about doing a swap from a 3.8 to a 3.4 Dohc. I have a 2000 grand prix gtp. And the motor is junk but the body is clean. And Ive been tossing around the idea of throwing my 97 3.4 Dohc motor into. I have a full wiring harness and ecu from the Monte Carlo ( motor donor) and I was wondering if the trans plug ins are the same and if the dog bone mounts are in the same spot in the radiator support. I was going to use the 3.4 front mount that I know the grand Prix has the subframe for kinda the same mount. Can anyone think of anything else I missed except coolant hoses and stuff.