I just rebuilt my '69 Charger suspension, and after measuring where the lower control arm wanted to be at ride height, where that put the strut rod, and how thick the strut rod bushing should be, I measured that distance, and shaved down the rear bushing to that thickness. With that, both bushings were still thicker than the metal sleeve they included in the poly bushing kit from PST. I coated the surfaces with silicone grease, torqued them up, and they don't ride any worse than rubber. I don't see how they could in that location anyways.