I have a set of polished silencers from cascade innovations. I bought them for the oregon dunes and never used them. These have the star caps and stingers for in frame CPI pipes. Small bore. I paid $325 and they are brand new. I'll sell them for $240 and you pay shipping obo. Call or text Eric 509-551-1199.
that definatly makes it eisier. i would try a aluminum airbox seal it up tight and feed into the box and use a pipe like this to get started
http://images.andale.com/f2/115/127/18224392/1116712451917_1116062703377_500_019.jpg
obviously you will need a bigger expansion chamber. just a little cutting and welding. it may not look pretty at first but it would be cool.
you almost would want to find a cheap 2 into one pipe and cut the header collector off and weld it on a snow mobile pipe since the expansion chamber on snow mobiles are usually big. i know a 2 into 1 pipe would not have a big enough expansion chamber for a turboed banshee motor. basically I think this is going to be a trial and error. another big issue for you is going to be an oil supply for the turbo. i heard of people saying the've used(or were going to try) the stock oil injection to supply them. my opinion is the stock oil injection is not going to be an efficiant oiling system. not enough pressure. you'll need a oil tank and a high volume pump. also its going to need an intercooler for the oil as well. good luck. i know its possible. im not sure on hp numbers but you can build a natural aspirated banshee to be a monster.
im not sure but i think your biggest problem is going to be the exhaust side. some how you would have to run a 2 into 1 pipe to get the pressure to spool the turbo even on both sides. Im sure for the intake you could possibly use an aluminum air box and feed it in that way.
when you say not perfect,whats wrong with them. I want shearers or cpi but I'm not sure if the big bore will work for me. I have a 4 mil with 66mm pistons. I think the big bore is for 68mm or bigger. Is that correct.
If its the clutch arm you need to pull the clutch cover and run the center screw out on the clutch. then it will come right out. The shift shaft requires you to remove the clutch basket.