XV Motorsports core support brace questions

Yet another question from me about beefing the unibody...

I've looked at the XV Motorsports core support brace. I like their box-tubing design over USCarTool's round tube design.

The USCarTool website says their brace must be used in conjunction with a cross-flow radiator, or the lower tank hits.

Anybody have experience with the XV Motorsports box-tube unit?

And, is a core support brace worth the effort?

-Brad

Just my opinion but I say no way....... Think about it, the k frame is right there. I dont beleive there is going to be any twisting going on there and if your a road racer do you really think your car is going to handle better because of it? I dont but that's just me......