Hi Vic... yeah, it is possible, but you need to cut off the front engine mounting bars from the NSR frame, and relocate the rear engine mounts, so it does mean cutting the frame. Then you have to make a pair of side cradles to mount the front of the engine like this:



The MC18 frame is a bit narrower than the 21, so I can't say how well it'll fit in there. I tend not to give any more info than the odd picture, because I had to work it out from scratch....and think if people want to copy it it, then they can also work it out for themselves too.

The other thing is, a stock (derestricted) MC18 engine is arguably alot better than a 350 engine, most 350 engines I see are frankly a bit cr*p. What I'm saying is, how succesful the result will be is entirely dependant on how well you put it all together.