I just picked up a late 70's Univega Gran Turismo and have some ideas in regards to messing with the frame. I was wanting to run downtube shifters that I have readily available but the bike has cable stops where the shifter bosses would be on the downtube. I was thinking about grinding off the stops and then using clamp on shifter boss where the stops used to be. Is there any reason why I can't or shouldn't do this?

Bar end shifters would be nice, but I already have the dt shifters laying around, and I will absolutely NOT use stem shifters. haha

Thoughts?