I just installed a GEBE kit within the last month. My answer to the inside the frame kit would have to be NO...I see no way for that to work with their engine mounts. For that matter, with any universal engine (Honda, Tanaka, etc) they are just too wide. Now if there was a way to mount their small drive gear to like a Grubee Skyhawk kit, you may be in business, but you should keep the distance between that gear and the plastic wheel the same. You would also have to work out something for a belt tensioner. Overall, the kit really is easy, IF the bike has clearance in all the right places. I worked for weeks to install this on a $600 700c hybrid bike...lots of modifications. In the process I had a $99 Wal-mart bike with 26" 36-hole wheels, and it went on in 30 minutes. Far superior to a friction drive...I don't even think you can compare the two.