just started modifying my 1988 4.3l S-15 jimmy. i am going to install a 3" body lift, and do a torsion bar tweak with rear add a leafs - will i be able to install 32" tires after all of that? Also, what are the most cost effective mods for this engine to increase power and overall efficiency? I've already added a K&N filter - and have a catback exhaust on order.