So the axles, but not their parts, are interchangeable? The brakes are a valid point, and I have been looking into disc brakes for a bit now, but how exactly is the steering a problem? Is the design so poor it can't hold rigidity at those speeds? Straight up swapping axles is a bit much, could the hubs be replaced instead? Would switching to Daytons be seen as a major improvement over the 6 lug Budd?