No, if I did this I'd only do it to one of them. I only have two '70's birds left so I wouldn't want to mess with both of them. One of them already has had mods, so it wouldn't be so horrible to give it a few more. I have a few opinions on vintage gear. If you own it you're certainly free to do with it what you want, but my preference with things that have made it this far is to let them be. I guess I could also keep an eye out for a good deal on a newer bird or a broken one...
I remember when having a stock bass or guitar was thought of as boring and limited (brass nuts, mondo bridges, pickups of the week, Khaler, Floyd Rose, custom paint jobs and carving, etc... The fact that any vintage piece made it this far unmolested makes me want to celebrate it rather than get the saw out. Thing is, back then they weren't 'vintage' guitars (or basses), they were just guitars... As for new stuff (or stuff that was modded when newish), I have no problem with that as well, especially for those who actually use their gear for a practical purpose.
