Mid 60s C-Body 8.75 axles... cant shorten them?!?

Dang this is a touchy one!!! I almost feel like slapping it in there full length and letting the wheels stick out the sides!

Heres my basic routine... 65 mile (round trip) commute to work 5 days a week PLUS thursday night fun runs @ my local track (1/8 mile) before I call it a day AND im running in a 6-race Bracket Series this year. All of this without a trailer too so its gotta be stout because if I break down, its tow truck time baby!!! I guess ill respline the axles if theyre not tapered and roll the dice and if theyre tapered, ill leave my small rear end in it and stay off the drag strip until I get the 8.75 situated.