Jimmy .
Here's a pic of the one I'm using . Specs seem about the same , cost about $140 from Trade Tools.
It can be a bugger to use trying to get the valve settings right and as you use the sand I find I constantly have to adjust the valve settings
.
I have a Renigade RP 16 with three cylinders and It struggles to keep up with air demand at around 130 psi .
It certainly blows of the paint and rust with a working area of about 30 to 40 cm @ 130 psi but air supply is a problem. I find it best to hit a bit then let air build up. @ 60 psi you can hold your hand in front of it.
Sand costs about $25 to $30 per 20 kilo bag depending on supplier and twice used needs to be chucked or sieved , which is a very time consuming process. I also had a hard time finding the right size mesh for the sieve. A full pot lasts about 20 to 35 minuets depending on valve settings. It also makes a LOT of dust and sand gets jammed into every f#*@'n where
IMHO It's good for doing small to medium parts but I'm doing the whole car and would recommend a larger unit for such a job. Any more questions just ask.
Brad .
PS The brass fittings on mine were rubbish and broke easily.