I'm running on 31x10.5 Mud tires right now, and I plan to do a bit of trail running and mudding this spring/summer. What would be the least expensive tire upgrade I can do for daily driving and hitting the pits? I'll be running these on a 86 K5 with a 295hp/380ft/lbs 350 with 3.73 gears and a 3 speed manual with a crawler box. I'm also looking for an inexpensive suspension lift... 2-4 inches should do well.... and not break the bank. Any suggestions?