M-Spec, I want to keep things as simple and inexpensive as possible, so I think just having a brake arm constructed to replace the one that is presently on the ACE would work best. I've looked at where it pivots to plunge against the master cylinder and it looks like an easy place to remove the existing brake pedal and replace it. Since the pressure on the brake pedal isn't all that great I'm not too worried about a modified brake arm being a bit longer than the present one. I'm thinking that the replacement brake arm would go behind the steering column, and there's plenty of room for pedal action. Heck, with the engine braking system on this machine I don't anticipate using the brake very often anyway.
And Matt, if we had a template for relocating the brake it would be very easy and inexpensive to have additional brake arms made. So I'm wondering just how many people would be interested in making this conversion if it proved to be a good improvement, or are there too few who still brake with their left foot ??