My tub is at the body shop but it looks like I forgot to drill the hole in the cowl brace for the sending unit wire as well.� What do I need to do to prevent rust where I drill the holes?
My replacement tub was built in February 2015.� The pto shifter hole was there, high beam indicator hole, fuel hole, pedal holes, and all gauges.�
Problem was the gauge holes were too small, the fuel tank holes were in the wrong location, and the brake pedal hole was off 
� Nothing a welder and a burr bit cant fix but dang its frustrating.
Welcome to repop land! I have an MD Juan repop 2A tub that I am just about finished with. Fortunately I had 2 original tubs to pick parts from. We had to rework nearly everything and add as many original parts from the older tubs as we could.
THE SIDE BRACE WAS NOT DRILLED FOR THE FUEL GAUGE WIRE - JUST DID THAT TODAY. I used masking and a bit of color matched spray paint to prevent rust starting.
Some of the gauge fit - others I had to enlarge the dash holes.
No PTO hole so I cut one from one of my other tubs and fitted it.
The fuel tank holes in the floor did not match my fuel tank.
Th tool box lit was a disaster. Used a tool box lid and catch from one of my original tubs,
Bow pockets and storage pockets missing - needed to graft them from another of my tubs.
The seats did not fit - and at least one was an original seat. Spent a lot of time re-working seats and tub to resolve this.
The hood (original) needed to be worked on a lot to get it to fit. In the end it was a compromise.
Most of the dash holes were there, but no ignition key hole. Did have the high beam tell tale light hole.
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