I see. I had no idea that there are so many things to take into account. My 86' has a stock engine. Freshly rebuilt engine and tranny overhauled. Just got swing arm bearings and new upper and lower ball joints, tie rod ends, and now I'm thinking I should just replace the stock a arms while I'm at it. My brother broke the front shock mounts jumping dunes so I was thinking I should just buy a new frame also. I over-tightened the swing arm clamps on the rear axle just 2 days ago, and put a hairline crack on the drivers side. So now I need a new swing arm lol. Those swing arms are so flimsy. Oh and I got the back brakes to work for the first time in fifteen years. They just wouldn't release. Lol god durn it. I really can't win with this quad.