QUOTE(mcogan10 @ May 5 2014, 04:10 PM)

I just bought a 1972 with the intent of fitting it with a busa or similar cycle motor to it. If anyone has had similar thoughts or experiments I would love to hear about it.
I'm pretty certain I'll have to do it with jackshaft and sproket and connect right to the wheels through the bike tranny. If I try direct to the transmission I'm pretty should that would blow it in short order.
Any tips or suggestions would be appreciated.
I'm doing a x19 gsxr 1000 build in the "sandbox". That might help some as to how I am doing a similar install. Its a chain drive to a LSD utilizing a Stohr sports racer diff, carrier, bearings and gear. No reverse - but I could install a reverse using a "ring gear" and a starter motor. (See the Zcars website in england for further info.) Since the x19 is an old racer, it will only have forward gears as it will be a track day car. Be aware tho, starting and moving a 1900lbs street car with the very low mass clutch & flywheel of the 'busa or Gixxer isn't going to be optimal.
With that said, for the 914 you could use a simple steel subframe that spans from the rear and front mounts that would carry the engine and adjustable differential (chain adjustment). The Stohr diff worked for me as it uses the readily available VW CV joints. However, the diff aren't cheap nor easy to find. (I looked for a while for a formula SAE Diff in stock, before stumbling on a new Stohr diff on ebay.
Be aware that the 914 is heavier than an x19... and the x19 was designed for a water-cooled motor. You may be able to place a radiator with fans on a GT modified engine cover and get enough cooling, but that might be a stretch...
Have fun and just do it!