heh heh heh.....
I have the beginnings of my next project.... Modifying an O.S. FS52 with some FS40S-C parts to make the "FS52S-C", and cramming the end result into a REVO!!!
I'll replace the stock carb with the .21 slide carb from my old GS Storm RTR engine, put .40C valve springs, spring seats, and cam in the .52 (maybe make some aluminum push rods too) -- My hope is for it to be very comparable to sicko big-block 2 strokes, power-wise. Reliability and ease of tuning will be it's strong points, aside from the torqy power and cool sound.
I picked up the cam and springs tonight.
The engine should be here later this week.
The spring seats are on back-order.