I just finished stripping the cab and doors on my '54 3100 and because I'm on a tight budget, I used a Poly Carbide Abrasive Wheel in my 4 1/2" angle grinder for the large flat areas. They strip paint REALLY fast and are available for about $5.00 each at HF. You could also use the Wagner Paint Eater if you don't have an angle grinder but the discs cost about twice as much at your neighborhood home center.
For the tight spots I used an inexpensive tank type sandblaster with 60 grit copper slag available at Ace hardware here in Arizona for about $10.00 a bag. It's a lot safer than sand, cuts better, and makes a lot less dust. I just sweep it up off the driveway when I'm done and strain it for re-use. And, it doesn't leave rust spots on the driveway if it ever rains here.
