HerbalT

Thanks, Knna for all your info on the lights, could you help me clarify my numbers here?

From a general google search, it looks like PL-L sockets are a hair under 3" each, meaning I could realistically fit 5 of them in the 16.25" depth I have to work with: 5x36w=180w.
Another general google search brought up some 105w integrated spiral CFLs that look to be around 4"wide, so I could fit 4 across the back of the cab and maybe another two on each side toward the front: 6x105w=630w with the downside that I lose a couple inches of extra headroom out of the 24.75" vs the 2 inches that the PL-Ls would take.

Unless my estimates of the diameter of the big CFLs are way off, it looks to me like I'd be better off "spending" a couple inches of height for over 3X the wattage. Being a noob to all this (with the exception of all the reading I do about it) I could be completely missing the point though.

After a slightly more detailed look around it may still be possible to cram the BIG cfls in, if I find the right make and model to satisfy size requirements, but the 85w ones are slightly smaller and would still beat the PL-L in raw wattage. (again, assuming I'm not missing the point)