I have installed a lot of CA18s and SR20s but just into the S13 and S14 chassis. Both engines bolt up the same and wire in the same. The only difference is the piping. These cars came with the CA18 overseas but I don't think you will have a problem with the SR. I've seen it done online before so I know it's possible. I've seen them with RB26s so i'm sure the SR will fit.