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My opinion is that these cars are already lighter. I would go for the cheapie shocks and the smallest stabilizer you can. I believe there is a tendency to overkill in stiffening the suspension of these speedsters. They are so light... truth is, you can get it so stiff that you are lifting too much when you hit a bump and actually impairing handling. The last speedster I got had such large bars on it that it road like lumber wagen and truly had unresponsive suspension. It's now fixed, and handles better. My opinion, avoid the bigger is better mentality of heavy cars. JMO.
The original Speedsters were lighter than most replicas and used the 19mm (approx. 3/4") front anti-sway bar, and Carrera buyers were "advised" to fit stiffer ones. They also ran tires that were MUCH less compliant than modern radials.

I would think most replicas would respond well to a 19mm front bar, and 19mm rear bar (IRS) or camber compensator (swing axle).
I have a 19mm sway bar up front now & will probably install the old sway bar out of the 911 in the rear. I'll probably try the Bilstein's first as they're set up for the beetle suspension without the torsion bars. They may actually still not be stiff enough with the 915 tranny and the 6-engine. There may be too much torque & cause the back end to squat. Hopefully, the front end will stay on the ground.
I also have 3/4 inch anti-sway bars on front and rear of a mildly flared JPS speedsteer. IRS rear. Because of the flares, I can run fatter tires. Currently run 205 x16 up front and 225 x 16 at rear. The reason I mention this is the tire width and compound can also affect handling. My car corners really flat, but I can also detect the back end starting to skip out on me in the whoop-de-dos (up and down, while going around!)when the rear suspension starts to load and unload. I am still trying to determine if I am really cornering that fast, or am I just at the chassis limits? Since I am on public roads, though deserted, an outside frame of reference is not readily available. Flat corners result in everything loose moving to the outside (I worry about the battery coming loose!).

Another interesting insight. 22 psi front tire pressure, and 28 psi rear tire pressure. Eyes flat on the garage floor, sighting straight forward or rearward at the tires. You can see daylight between all the circumferential grooves around the tire and the garage floor. THAT IS A LIGHT CAR FOLKS!
If you're worried about the torque from the engine causing flex on the chassis, you should get a "traction bar" from www.lowbugget.com or an RKC brace. I don't know if these will fit on Speedsters, however, your is based on a VW pan, correct? So, with a little tweaking, you might get it to work.

If you don't already know, the traction bar lifts up the engine 'slightly' so that it keeps the engine horizontal when you gas it. The torque from the engine then stays in the drivetrain, not flexing your chassis and causing wheel-hop. Of course, make sure the rest of your drivetrain can handle it, cause wherever your weak-spot is, that's where it'll break. The RKC brace is nicer and cleaner but almost ten times as expensive. Check out www.aircooled.net for that one.

aloha,
Joel
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