quote:Originally posted by PanteraDoug:
Doesn't Hall have rear billet aluminum uprights? They did.
Precision Proformance now make the alloy uprights that take all stock parts inside. Not sure on theirs but they seem identical to Hall's which were about 10 lbs lighter per side. They are around $2500 a pair naked or 'more' if you want them assembled. Billet axles are a couple of pounds heavier than stock or current 'factory' replacement axles. The uprights are (or were) made of 7075-T6, so cannot be welded on if things go wrong.... I've written numerous articles on lightening up the entire car as well as dropping the unsprung weight by almost 50%- without alloy uprights. Currently, our '72 L model weighs 2690 lbs ready to run with 1/2 tank of gas, A/C, stereo & 10-disc changer, and fiberglas 'L' bumpers on both ends, and is street-licensed. Details in various POCA newsletters going back 20 years- this is a VERY long-term project! FWIW, our brakes are early Porsche 911 vented rotors with aluminum hats- on both ends- with Wilwood Superlite calipers in front, Porsche 911S aluminum calipers in rear and no adapters needed on either end. These rotors are 0.81 thick x 11-3/4" OD. I also run Wilwood mechanical calipers on custom brackets attached to the stock e-brake cables, which work fine as e-brakes.