Tonight I got the rear baffles in place, match drilled, and countersunk. These are counter sunk as opposed to dimpled to make it easier to slide the parts together once they are coated in pro-seal. I think I read on Bob Leffler’s site that there are 170 holes to countersink on each tank. Well I did both tanks tonight, so by my math, (170 holes times 2 tanks) I did 4,352 counter-sinks. But I might be off on that number.