Go to www.dratv.com/ct.html
to see what it takes to drop a Lifan into a CT-90. By the way the earlier (around '67 and back) CT-90's that used the pushrod engines are easy bolt together projects for the modern Chinese motors. I just missed out on a potential unit on eBay that went for $51.50 in southern Illinois. Hopefully someone here was the lucky bidder.