Fred, thanks for the suggestions. If anything, I want to go with bigger tires so going back to stock spindles up front is probably the only way to go.
Scot, I've also got a '96 RMW with the tow package. Are the springs you're talking about the same as I've got on the RMW? If so, the ride height of the car with those springs is good, but the springs are a little soft. I have to keep the airlift 1000s aired up to at least 10 psi to make the back end feel sufficiently stiffly sprung. Those would be an improvement over what's on my Caprice wagon now, but I'm hoping for springs that will have similar ride height but are firmer.
--'94 Caprice "SS" wagon, NO LONGER FOR SALE!
--'96 Roadmaster wagon, SOLD!
--'04 Mustang Cobra, '08 BMW M5
--1125R, 1050, VMax, VFR800, DRZ-400E