is it a strut of a shock? if its a shock the lowering linkage will work you can get them on ebay if its a strut but get some square tubing & cut it how long you need it & drill your holes in it for a bolts
All you will have to have in powerjets & your main jet drilled out but when you get the powerjets make sure you get the adjustable kind not the kind you have to put the jets in.
Id use 927 Koltz will turn the in side or your cylinders yellow .. well benol will at least I was usein benol till I saw was it was doin to my motor & switched to 927 & it cleaned my pistons up in about 3 races
I got just about everything you need I got Grand River Drag Pipes one out each side +8 swinger & 34mm alky carbs with adjustable powerjets everything came off my bike that blow up last saterday it was just bored .20 over & ran a 3.72