Check out the Edelbrock 7577 for the 318 and 360 Magnum engines. I have the knock off intake and I had to trim my front engine bracket and AC will not fit on my engine. My brother has the Edelbrock 7577 and his bracket went on great and he can run the AC compressor no problem. You want the thermostat to the passenger side of the engine because the compressor sits on the drivers side and is deeper than the alternator. I will be switching to the 7577 soon.