The frame mounts are on the correct side it's the insultor pieces that attach directly to the engine block that I'm having problems with. When I ordered the motor mounts they had the same part number so they couldn't be side specific (they are visually identical also). On the header note, I will be replacing the existing ones (Dynamax\BlackJack Headers) because of ground clearance issues (after lowering car) with Ceramic Coated Hedman Headers (Summit Part Number: HED-35276). I was looking at the Long Branch Manifolds but I don't want to spend that kind of money.