Glad they'll be helpful. I think those came from the Early Cobra website- I don't remember the address (earlycobra.com?) but it's been down for several months, and I think there are intentions to get it back up or move it, but I don't know when or if that's going to happen for sure.
www.foureyedpride.com is a good source of photos and information too. I don't have any chassis/floorpan pics, but I know on my 1991 Mustang, the center is still bare primer, and there's overspray part-way in from the edges, but I don't remember exactly how far. The K-member is body color, front A-arms are black, rear end is black, and the driveshaft is steel (surface rust on mine), although an aluminum driveshaft is a common upgrade. The rear control arms are also black.
Also, check out our somewhat-stagnant FoxBody community build:
http://www.modelcarsmag.com/forums/index.php?showtopic=30265&view=findpost&p=297309&hl=fox+build+community&fromsearch=1
Looking forward to seeing your progress with this one.