my buddy who was goin to help me install it said we could do it with a/c (I need a/c in my cars) and the manifold is custom, so it looks like it can fit, when i looked online at turbo d series with a/c, i saw that it will be a tight squeeze but can work

Edit: Also i think you have to take out the a/c first, install the kit, then replace the a/c back in its place