What do you have for chassis stiffening? Options

[Justinp71]

I put some more horsepower in my car, so far I have just autocrossed it on street tires. I have the bolt in roll bar that has the mid bar going to the floor.

Besides that my chassis is stock and I am wondering what I should do for more re-enforcement... so I can comfortably run on slicks.

Below is a photo of the roll bar. I don't consider the roll bar to give to much chassis stiffening, but it just might help with cracking the longs.

Edit: I mainly just use the car for street and the occasional Autocross or DE

[Chris Hamilton]

Joe, My car does that with an autopower rollbar bolted in.

This is why it would be nice to actually MEASURE flex before and after.

Stiffening is great, and 914s need a bunch of it, but it's pretty hard to just eyeball a car and tell where it needs stiffening without some way to measure it, otherwise you're just welding lots of tubing into it and going "well that looks good", with no idea which bits actually helped and which bits didn't. The car will probably be faster and feel better afterwards, but could you have accomplished the same thing with less weight?

It cost me $500 for my aluminum pressure plate to lose a couple pounds and it is going to cost me another $500 for a fiberglass trunklid to lose a few more pounds after that. I'm sure as hell not going to add 20lbs of steel tubing until I know for sure what it's going to do.