Larger Torsion bars?

[AIRSICK]

Hello,
I am building a 69 bug and I lowered the suspension. It looks great with 17 X 7 wheels and low profile tires but the stock torsion bars are so soft! Sway away makes larger torsion bars but I have never seen a vw with larger torsion bars so I don't know how large to go? I just want it to handle good and not pound the heck out of the bump stops. I have KYB GR2 shocks and a 3/4" sway bar front and rear. I was thinking that a 25mm bar would be good but does anyone have any suggestions?


Thanks