If you really want a stronger wheel why not get straight gauge spokes? If its for weight savings, why not go with the 105 hub - it will probably weigh less anyway ( idk for sure) and then you won't have to mess with your frame, because if you mess up there you'll be looking for a new frame or making costly repairs. I have built rear wheels on road hubs before - I've never had a problem. The ones I've built on have been over 20 yr old 126mm hubs too. You'll be fine with either hub, but I know I wouldn't wanna mess with my frame.