He's been around the block quite a few times, spending most of his life inside the block. But now, age 52, he's got an honest job making high-class torture racks and other exquisite playthings for an S&M outfit in downtown San Francisco.  His only real problem is he needs a new set of wheels and he's going to pick one up today, a beat up Ford from one Martin Seam. Sometimes a ticket to Hell only costs $600 . . . nonrefundable, of course.