Originally Posted By fast68plymouth
Chip, if you go that route...... get the upgraded “speedway” bushings.

OK, I was quoted $650 for the EZX upgrade up to 900 psi spring pressure and $720 for the EZMAX upgrade for over 900 psi and/or supercharged/turbo applications.

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax