I had fully functioning A/C on my S15 SR with Full Race top mount. The Full Race top mount is not supposed to be compatible with A/C, however since it was an S15 SR, it uses the smaller R134 compressor... so it easily cleared the manifold with no issues. I ran it that way with both the standard HVAC controller and then later on with the JDM DCC. I'm still debating on whether or not I'll do it on the LS3. Most likely I won't do it right away, but save it for a small winter project. I didn't weld shut the firewall where the lines go through, so that right there proves that I will be adding A/C at some point
