[Jeff Lee]

I don't know what kind of car we're talking about but $500 or so is a lot cheaper than Santhuffs. And maybe front-end travel limiter or weight forward of the mid-section of the car is even cheaper yet. Or maybe a rear suspension adjustment or an RPM adjustment.
I'm just saying exhaust all current resources first. And maybe a pair of Santhuffs will be the magic pill you need (they are very good shocks; something I wish I had looked at. We'll try my custom valved BNC AFCO's first).