Hello All, I was wondering if anyone can offer some good performance upgrade tips for a 1994 K1500 Extended Cab, 350 TBI that is pretty much stock. We just bought a 1978 travel trailer that weighs in around 3000# empty and I have noticed an extreme performance drop compared to a pop-up trailer. I was thinking of a K&N airbox upgrade through JC Whitney, 1500 pound Helper springs also through JC Whitney. Any other advice out there for performance upgrades with a budget in mind? Thanks!