1. I have a 1999 f250LD. the front sits 2.5 inches lower than the back. the only leveling kits i find for f250ld's are for 4x4s. can i use spring spacers for '99 f150s or no?

2. i have 245/75/16s right now. the back tires have 4 inches of space to the back, 3 in the front, and 5 to the top. (measuring the exterior of the well/fender) the front is 3/back 3 front and 5 top. could i fit 33's with a leveling kit in the front and back?

Thanks