i copy and pasted this from a little jem i found while researching for my winter project.
1972 Honda CL70
Here are the mods:
155cc Zongshen/Lifan/GPX hybrid.
GPX Crank stroked to 63mm, 56mm trailbikes top end, Lifan BVH Ported, Z40 cam, takegawa shorty intake, Mikuni VM26 carb, light flywheel, light slinger, HD clutch and valve springs. About 50 miles on the motor total. Classic Ultima Pipe. Kitaco HP Coil.
Astrea Oil Cooler (as nice as trailbikes versions)
Honda Goldwing Control
Aftermarket speedo and tach
New Honda xl80 rims laced to RCM Hubs and brakes
Leather Solo seat.
New (expensive) tires 17 in front, 14 in rear
Everything works exactly how it should work (speedo just stopped, but should be an easy fix). Needs nothing. Get on, kick, ride. 83mph in this configuration in full tuck. Feels very firm and smooth at speed.