whats the best cheapest way to drop my f-150? i was thinking springs, and ibeams since theres no spindles... any web sites for springs and such??? also.. after it runs for awhile..the oil pressure juss drops, and starts idoling like crap.. engine light comes on..any idea's?

oil pressure sending unit might be faulty, or your oil pumps goin south, the idleing bad part i can't explain. But i wanna drop my F-150, i gotta 91 (same bodystlye as yours) so when you find out how lemme know how it goes. Did you say they don't make lowering spindles for our years.