What is the fatest size tire I can put on the rear of my 89 9 inch rim?  Does anyone have 275's on them?

Im going to run a 19c turbo, is chads intake worth the extra money? what horse power numbers can i expect to get with the magna and 19c? chads intake flows more than the magna, but how much?  I went to the magna site, and most of it is under construction. thanks

Is there a difference in any of the mud guards that came on the cars? Was there different mud guards for the widebody, and flatbody? If not, will mudguards from an 83 work on a widebody?

Do you like them?  Do you think the are worth the 416 bucks for the set?