There has been NO proof that the coil over suspension systems offer any advantage over a well prepared, stock based torsion bar system.
People fall for the hype, thinking that since the torsion bars are old technology that the new coil over idea is better. It isn't.
Torsion bar suspensions are tougher and far more durable. The coil over stuff moves weight forward and UP, exactly opposite of what makes for better weight distribution.
I've known a few guys that did the conversions. Two of them admitted that it wasn't worth the money. One guy has a RMS setup and has had to replace Heim joints twice in 10,000 miles. GREAT.
