I have a better shot of the t case skid that collapsed...it does have ridges (Sides), but no fluting in the middle, and is flat where it attaches to the cross members:
So, it was reinforced on the sides with a bend up to form the side itself, albeit collapsed anyway...just not as bad as it would have w/o any bends.
_________________________
- TJ
2001 Xterra '03 VG33, SE 5 spd, 305/70/16's, Revolvers, UBSkidderz, Doubled AAL's, 3"SL/2"BL, winch/bumpers, skids, sliders, OBA, Snorkel, pine stripes....
Friends don't let friends drive stock.
http://www.gifsoup.com/view/501230/tj-tackling-crawlers-ridge-o.gif