IVE GOT A SHORTBED TRUCK WITH A 454 AND IM HAVING TROUBLE GETTING TRACTION. ILL SPIN THE TIRES THE WHOLE 1/4. AND WHAT ARE SOME THINGS THAT I COULD DO THAT COULD HELP ME WITH THIS PROBLEM. AND IVE GOT A 12 BOLT REAR END WHAT ARE THE BIGGEST SIZE SLICKS THAT I COULD PUT ON IT WITH FACTORY FENDER WELLS.