But on a separate issue, why do you assume that at 50,000 miles "will need a complete overhaul anyway to keep it going"? I have a Speed Triple with 116,000+ miles on it and it doesn't need an overhaul. Runs fine. If your Daytona has been raced or something, then sure, or if you've torn into the engine or have done a compression test or something and you know for a fact that it needs major work, then fine. But if you're just assuming a 50,000-mile engine needs a rebuild, I'd reconsider. These engines have a lot more mileage in them than most people assume, especially if they've been cared for with regular maintenance, synthetic oil, etc.
The speed triple is a completely different motor than the one in the Daytona. I have rebuilt a number of Daytona motors and have spare parts from others and can say that 50K is a fair amount for a Daytona. Most people that have Daytonas don't baby them. I would agree that it really depends on how the owner treated the motor.
At a minimum I would do the following:
1. Inspect the cams and cam ladder for wear. Make sure that the cams journals are within spec. I have seen a lot of wear here.
2. Remove the sump and look for debris in in the bottom.
3. If debris in the sump then pop the oil pump out, remove the cover and check for wear and to see how much debris has gone through the motor/pump.
4. Remove the timing chain and check it for stretch per the service manual.
5. Check the shift fork clearance which is easy with the sump removed.
If you see sign of debris then IMHO I would dig further(split the cases).
There is also the issue that a 07 has the Gen1 motor which is not the most reliable Daytona motor. The Gen2 motors are better and what I have in my gen1 bike until it gets its Gen3 motor