I have an 87' Firebird and I just have the stock rear end and I would like to up grade to somithing I could use Mainly for Drag Racing And a couple trips to town every now and then with out having to get one of those comp. engineering frame kits. What could I replace with some performance part and maybe add like some kind of 4-link or somithin. Also I bought some new wheels 14-6 for the front and 15-10 for the back Im gettin some 295-50-15's for the back what should I get for the front?