Quoting prove_it:
I bought the RobiSpec clearance ebay springs. They are legit springs. 80 bucks shipped in. I used the fronts only. Front was still kinda high, so I cut a dead coil and now it sits awesome. It would be better with more height in the rear though. 1/2" tops, no more. I'll wait til I do the EVO rims and decide then. The Robispecs drop the front about 1", and with the cut coil, about 1 3/4". I'm using full length evo bumpstops too, to prevent bottom out. It rides great, and isn't too rough for non MR struts. The rear Robispec spring rate is damn near identical to stock, so it doesn't make a big deal not using all four. Once I find a 1.2" spacer for the rear springs, I'll swap them in just so it is a full set. I want to space the spring so the shock is still within it's range and allows for more travel.
**Note: I have the GVR4 specific front upper camber plates. These seemed to raise the front about 2/3" over the stock top hats. My coil cut was mostly to correct that. Others may not need this.**
Lot of discussion on EVOM about these. They claim they are the real deal.
Robispec clearance
Swift springs would be my next choice, as they have a 1.6" drop without cutting the coils. I think these would work great, but you can't use the rears. You end up paying 350 new for front springs. Not much of a budget set-up then, IMO. Finding them used is hard too, as everyone wants them.
Do NOT use tein, the spring rate is too soft and all the EVO guys say they blow out front struts within 5k miles. The green springs are very bad. The brown ones are supposed to be better, but on EVOM everyone HATES the tein springs. I know one guy on here is running them.
I run EVO MR bilsteins with Swift R springs on all 4 corners. I don't know why you can't run the rears. I do.