Well im going for a bigger turbo and that will require an FMIC. I like the kit greddy has for the FC. I know that the R-spec and the V-spec mount up differently, but the R-spec is better core. If I went with say a 60-1 turbo or a PT61 turbo, would the R-spec kit be bolt on with no mods? Or will I have to make my piping like on the V-spec?

 

just gotta make the pipe from the turbo meet up with the Greddy kit, NOT THAT DIFFICULT!

 

The thicker core is what I have on my vert. Be prapared to remove a ton of material from the bumper cover to make it fit. I used some layers of cf bonded to the back of parts of the bumper cover to reinforce it in areas where it had no support and wanted to flop around. Took an entire day to just get the bumper cover the way I wanted it.
I also had to fab up some tubing from the turbo to the ic. Pretty easy to do. Even if you have never done it before, you can do it.
Get some mandrel bent elbows and a chop saw. Mock them together with duct tape and take it somewhere to get welded up.