I'm planning on fabricating a skid plate for the transmission/transfer case area under my Gen III. I haven't been able to find any aftermarket support for this except through some businesses in Australia.

I'd like to know if anyone has a suggested thickness for the overall plate and if you'd recommend placing stiffing "ridges" on it as well. The plan is to use the existing cross-members for attachment points.
Thanks

'02 Montero: OME suspension, ARB front bumper, homemade skid plates & spare tire Blitz can mount, extended diff. breather, K&N air filter, Optima Yellow Top, BajaRack, IPF lights, Goodyear Duratrac 265/75/16's, RUD 4x4 Grip chains