Man, I guess I need to or have to test some of your recommendations. On my 85 Golf my set up works great. I run 550 front and 450 rear and a rear bar only. The rear bar is rated at 800lb. I am in the process of testing a new bar set up. It entailes welding a flat 3/16 plate( as a mounting point for the rear bar) across the rear swing arm. In theory: the 3/16 plate should greaty stiffen the rear axle and the plate shoul prevent the axle from deflecting. I also have made 3 different size sway bars which can mount on the plate. This way you can fine tune the car to your driving technique.
I also use Bilstein sports; I have found them to work quite well and seems to last a lot of races for me. On my Corrado,I like and use Jay's shocks from ground control, As long as I keep the car on the track the shocks last a full season. If you like farming or in Ca. dirt track driving and you cant keep the car on the track expect 4-6 races befor you rebuild them. The Corrado is a big pig compared too the Golf and spring rates and shocks are different. I like the option of adjusting any shock or suspension component. In California we have some wild tracks like Willow Springs, Sears Point, Button Willow with 29 different configurations, Luguna Seca and Thunder hill, you need to be able to make adjustment fast and that is why I recommend you should make every thing you can adjustable. Good luck with your car.
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Gary Semerdjian
#98 Corrado ITS