During my test run today i also snapped a rear universal. I havent looked but i wish there was a rear steel version too. Im running a 3.5 and the overall balance and driveability of the car is great. I am close to a very good setp. I can see that in modified, the rear belt takes more load than the side and front belt. Definatly recommend the K factory belts....at least the rear for mod.
I didnt have to add much weight to balance the chassis using four scales...one for each wheel. Shock collars are almost all the same distance. I only had to add 1 1/2 turn on the collars to balance.
The 25lbs front and 17 rear seems to work well with medium traction with a flat roll center in the rear and 1mm shim in the front inside upper camber links. I have also 1mm anti dive in the front.