With the advent of RIMS mounting systems there's really no reason to ever drill out a Tom. You can mount any drum with any hardware with those!
Bass drums might be a slightly different story, I have put vintage rail mounts on some vintage virgin kicks, but they weren't showroom quality pieces either, they looked good from a bit away, but up close they were quite worn from years of use.
I have seen the proverbial 1990's PEARL tom mount carved into the 1960's vintage LUDWIG Tom, that REALLY grosses me out and should be avoided at all costs! crying2-07
If you have a perfect virgin shell, I wouldn't suggest it.
But if it's a "players" drum and you do a GREAT job, I'd say do it, but be SURE to get vintage measurements, you'll want EXACT placement for the drum you're working on. Also make sure the hardware you will use is the standard era's issue for the piece you'll be attaching it to.
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