GSXR 400 question

[Matt]

Anyone know if a 750 engine will slip into a GSXR400 frame without too much hassle? Its an 88 model.
Thanks

[chopaweeza]

I build chopper frames so I'll tone the answer back. The short answer is No . It has been done before but requires extensive frame modifications and I do mean extensive. If you don't have a decent amount of experience with frame alterations I'd advise against it.