I've been messing with my electircals alot lately and it got me thinking about a problem one of my friends had with his Toyota. Because of a bad ground somewhere the head welded itself to the block. There were a bunch of other problems assosiated with it too, I can't remember what they were. In the end it ended up costing him over $4000 to fix everything. Has anyone heard of this before? Can it happen to our trucks or would it have somthing to do with the way Toyota's are designed?