Can someone tell me exactly what is the purpose of the x-brace on the roll cage?Beside the xtra support of the upper shock mount support.Has anyone ever attach the bracing from the main hoop to a stock inner frame rail or is mandatory to mount it to the upper shock mount .I'm considering up dating the cage on my e-body with a x-brace.do u all think that the x will keep the stress cracks on the rear window/side rear glass to a minimum?Sorry 4 the many ?'Inquiry minds like to no.Thax In Advance.