kitbashing a "plastic reefer"?

[ckape]

Well, I managed to find the BNSF page on these reefers, which gives the important dimensions and whatnot. I haven't been able to find any boxcars to base a kitbash off of, so I'm not exactly sure what I'm going to do.

Oh, and here's the information, in case anybody else was interested:
http://www.bnsf.com/vicc/markets/perishables/72ftreeferboxcar.html

[ckape]

It looks like Trinity Rail Management (TILX) picket up some of these cars from the BNSF. Nice patch job, though, you can barely tell. All the reefers seem to be in the 793000-series.

Again, any information that would help me model these would be appreciated.

[ckape]

I was wondering if anybody had suggestions on kitbashing one of the BNSF's newer high-cube reefers from a boxcar. I came across someone referring to the type of reefer as a plastic reefer, here's photo of one:
http://rr-fallenflags.org/bnsf/bnsf793768asb.jpg

If I'd have to scratchbuild it, I'd be up for that (but I'd probably want to finish some other projects first), but just knowing the dimensions would be nice.