why not just get some cases? i got a set. bottom case is mint. top case has a chain wack. above the front sprocket.swapping them is an afternoon.pm me if interested.
there is no set number on the gears to run, you will have to try different combos. on my alky 350 the magic numbers was 17 38 winding 5 th out to the quarter. on my 400 cheetah it was 18 38 all 6 gears. it is whatever your bike can pull effectively out of the hole and on top. just buy some sunstars and try different ratios.
the puertos just cut a length of chain, squat the bike down in front and bolt the chain to the upper and lower shock bolts, viola drag shocks.
like this.
we have them in the city in them faggoty ass stretchy out fits that scream" I AM BIKEMAN HEAR ME ROAR!" I wouldn`t be caught dead in one of them gay suits.