hi guys l have a 89 na that l have done a few things to such as getting rid of that troublesome 2 piece tail shaft but l put 18" x 8.5 wheels on her and the inner section of the tread went south causing major blowouts is there a strut you can get to pull the camber in l've heard if you can find a good mech that he can put shims in to help the problem @ 260 a tyre this is not what l need assistance required thanks Geoff Vic
To adjust the camber you will need Adjustable Upper arms and adjustable rear camber arms. http://www.ttzed.com/products/products_listing.cfm?cat=32&grouping=1&title=Suspension%20%2D%20General There was a group buy for rear camber arms @ $205, i beleive the new design noltec upper arms are good at $430. It's not cheap but you'll stop tyre wear and increase your grip.
Check out the discussion on this thread: Clicky I have similar model and same problem. Cheers Stephen