I am going to hold up on my 4-stroke 4g motorized bicycle kit build with the
SBP shift kit. I made a good bicycle find on a late 1980 Gary Fisher Hoo Koo E Koo mountain bike with front suspension, weinman 26 inch rims and cro-mo frame. Iwill be using CR machine stage-2 top end kit with the 6.0 head. When one becomes available again Freds PK-80 bottom end and a SBP shift kit.