BIG CHEVY 3600 and Grant Bowker are right on.
I did my frame and axles myself, but that was only because I have a buddy with a huge compressor (pull behind type with a 4 cylinder motor) and a huge pressure pot (holds about 200-250 lbs of sand at once, all of this running thru about a 2 inch O.D. hose.
not a practical set up for anyone to buy for use on one or 2 restos.
plus the noise and mess of it all can only be delt with if the work is done in a large open area outside the city limits. and a helmet with air supply and long sleeves with pants is required. (the silica dust in the sand will really mess you up)
now Im not sure what part of Texas your in, but if your near me and we could fnd some more people with heavy blasting needed, I wouldn't mind asking my buddy if I could use it again. but if you find a place that will do a frame for around $100 like mentioned above, I'd go with that.
-LGringo
