corner-carving 87 R10?

[78shagginwaggin]

Just bought an 87 silverado r10 and I'm looking for ideas to make it handle better and still keep the rear leafs. I already have a drop kit for it with spindles coils and a flip kit. I know coil overs are the way to go, but those are just not in my budget. I'm curious if any of you know what I can do to improve on what's there.
Oh and front sway bars were optional on these trucks and mine is without.