SpeedTech Pro-Touring Subframe with Low-Mount AC

[ironworks]

The AC compressor position should be the same for all LS engine when mounted down below. But I would use something like the Vintage air system to mount the small 503 compressor as it will work much better then the factory GM unit. Cycling vs Pressure AC system differences. With the fabricated design of the Speedtech unit it shouldn't be a problem.