Hi does any one know if a minarelli am6 engine will fit into the frame of my aprilia af1 50cc sintesi replica which currently has an rv3. I know you have to modify the frame but is it much work. Has anyone done this, if so could you tell me how to do this. Also just wanted to find out if an am6 engine is quicker when modified and standard compared to the rv6 engine.
Thanks for your help.

yes it will fit!, but you need to do some welding on the mounting brakkets though, to line up the chain!