[ttweed]

I would go with 21mm F and 26mm R T-bars and a stock 18mm rear sway bar from the '74-77 911S with an adjustable, Weltmeister 19mm bar in the front. This will give you the most bang for the buck, and allow you some steering balance adjustments with the front ARB. I don't like the way the available rear adjustable ARBs fit on the SWB cars. Get some 7" rims w/205/50-15 V710 Kumhos and a good alignment and you will have a very potent autox machine which will not be too stiff for street driving, still, especially if you switch back to the stock, high profile tires on the street.