Hi there...Regular Street Triple forks will not fit the Daytona because the calipers are different on the regular street triple. Not to mention they would be a downgrade because they have no adjustability to them. Street Triple R forks on the other hand are a direct swap. I can't say for sure that the cartridges have the same shim stacks and the springs are the same so I wouldn't recommend using one of each fork at the same time, but in pairs there's no issue at all. I have an extra full set of forks here, shipping might be prohibitive though given I'm in Canada.