Originally Posted by Toaster556

I just retired my old 5M based car into a 13.5, and unfortunately the bolt patterns are far enough off to not bolt up, but close enough to make drilling new holes a sketchy proposition. I laid my 6 series gearbox spacer over a laydown 3 gear designed for a 5M to give you an idea of how close but far they are. Unfortunately, with both being stl files, its a bit difficult to make things out. The 5M has a slightly narrower but longer bolt pattern. (Also unfortunately, I can't post images yet, so I can PM it to you to post if you'd like)


I am working on a standup 4 gear for the 6 series, which may morph into a layback/laydown style if I have to start moving weight forward