Here's a fun, even if only temporary use for those holes: Install a cheap aftermarket windshield squirter kit. Aim the squirters 90 degrees to the passenger side, drive slowly and soak poor unsuspecting people.

I/we may or may not have done this in high school, occasionally substituting in the mass quantities of urine,a by-product of the watery, 3.2% beer us under-aged kids could most easily obtain .We were hell on nerds back then.

Your truck's looking good.