I'm thinking about investing some dough in air tools, I'm thinking of going the Craftsman route. Impact wrench I'm looking at is this guy : http://www.sears.com/sr/javasr/produ...id=00919920000
It puts out 550 ft-lbs. My question is this : How much of a tank do I really need to use this? They have some specs for the wrench, etc. but the motor on the tank delivers 3.5 CFM at 90 PSI...I'm just looking for a good starter setup, and the sears deal w/ this tank seems pretty good to me. Thanks!