Just picked up a 1980 C70 Express (missing some bits) and I've had a CT110 for a couple years. Hoping to figure out how to swap a bigger engine in one or both. I guess the C70 engine mounts are different so maybe that's not a prime candidate. I'd like to be able to hit some faster roads around Denver, Colorado. Freeway speed would be nice - 60 mph - the 110 pushes my 220 lbs. around at 40 mph easily enough, 50 is pushing it, and I once got up to 54 mph downhill and tucked in tight. I'd like to keep the low range on the 110 though, if possible.
Any resources would be greatly appreciated. I know very little currently.