70s schwinn 10 speed slim tires, best engine to use

[Jacob Mayer]

I read through some forums and saw a few of the problems with mounting an engine on a 10 speed, i plan to install anyway and make it work, gotta get to work somehow, just wondering if theres any kits to steer clear of or if any kit bought online will work. As hoping I could mount an 80 cc 2 stroke

 

[wheelbender6]

I would use a friction drive kit.