I did exactly what you are doing, even got the lower end on eBay! I spent about $1000.00 rebuilding my motor (new cylinder, new crank, new head, new piston, all new bearings, all new seals and gaskets). I can’t remember if that included the electrics or not. The CDI is not that expensive but the stator setup is $$$. Get your parts from a place like discounthondaparts.com . There are other places. You can buy a new cylinder for what it would cost to buy a sleeve and have it installed. You can easily do this if you have some general rebuild experience (I had only done car motors before). One tip on the transmission. I THINK I remember reading that only the 96 97 is a direct swap. The earlier transmissions have one shaft that is shorter or something like that (IIRC). Also, you can easily slip fit the bearings/crank. If you are doing it by hand, it will take a while but easily doable (I did it on a lathe with some sand paper). Stick with OEM Honda parts (especially if you are going to run in Stock Honda). Good luck. Feel free to email me if I can help (it’s been three years though).