The west coast mirrors were on the truck when I got it. I just swapped them out for stock mirrors last night. The truck will be used on the farm and in some timber and the big, non-folding mirrors were a bit fit for that.
I'll probably leave the taillights stock, again b/c it's just going to be used at the farm.
Yes, there's two tanks, except the front one isn't hooked up (yet). The truck is actually an M724 (cab + chassis model) w/winch that was "converted" back to an M715. The winch, front PTO and winch lever are gone, as well as the split bumper. The rear PTO is gone (but the lever is there), but the rear axle disconnect and lever are still there and functional.
I was told the rear gas tank location was stock for the M724, but who knows. I think maybe the stock front gas tank was put in when they (the military, the fire department, who knows) put the M715 bed on it. Maybe it's never been used. I'm going to put a toggle switch for the fuel and sender and use them both.