I have seen 600rr and f4 tail conversions on 87 f1s and I want to know how I can do this? What year and model will just bolt on? Will any? I would like the option to take it back to stock if I wanted to. Any feedback would be great.

 

There are not any that will just bolt on. but here is a link to a good write up on how to do it.
F1 to 600 RR tail swap