I'm not sure if it's possible to put the radiator directly on the case since there's a small lip on the case that gets in the way. The only that it's possible would be to use a thick washer/spacer. I'll try to work on it tonight.I had this installed on my M1 before. If you’re thinking push pull, then maybe mounting one of the 92mm on the outside of the rear panel would help with interior space. It’s been a couple of years, but here’s how I think I mounted it: Mount pump/plate to the cpu first. Try to might the inside 92 to rad before turning the radiator until it fits well onto the rear panel, but without twisting/kinking the tubing. Screw the outside fan through housing into radiator holes. Hope this helps!