Ah right, didn't realise it was for strenth aswell, I like details like that anyway. Shame my only proflex frame with that hole is a 97 with v's as stock, would be cool to route a cable through it.
That sounds dodgy lol.
I've got a 454 that's old enough to run canti's but dosent have the hole , just a wierd pully system taking the brake cable non drive side of the tube.