Best thread(s) on undertrays for RWD trucks?
 

You have to deal with the driveshaft and different suspensions for trucks compared to smaller and more economical vehicles. I know there have been lots of threads on undertrays, but any help finding the best ones with pictures for RWD trucks appreciated.

Also: Undertray vs "skirts". You see the 18-wheel big rigs on the road with skirts effectively covering the trailer undersides and the fuel tanks.

Are undertrays more effective than skirts?

BamZipPow's undertray thread should be useful to you: http://ecomodder.com/forum/showthrea...pan-24777.html

Comparing mods alone, I would guess that an undertray works better than side skirts, but you can combine both of them for an even better effect. Side skirts are a lot easier to make than a whole undertray, that is part of the reason you see those on semis.