Earl's -6 AN Male to 1/2"-20 Male 1983-pontiac-firebird-esi2278290 The included grease-able polyurethane bushings

The included grease-able polyurethane bushings enhance ride quality and reduce bushing deflection compared to stock rubber bushings

For even more adjust ability - we recommend a BBK kit that includes a billet aluminum firewall adjuster

keeping the thrust surface lubricated

The adapter bolts into the stock bypass mounting holes

These adjustable control arms allow for fine-tuning of the rear end position for additional tire clearance and aftermarket rear end installations

Earl's -6 AN Male to 1/2"-20 Male 1983-pontiac-firebird-esi2278290 The included grease-able polyurethane bushingsBlue Anodized Lightweight Aluminum Construction. Typical Application Power Steering Fuel Pump 5 16" Inverted flare fittings with 1 2" 20 threads