Ha!. That's half the fun, right? To be able to say "These cost $100 new, but I waited and looked around for 9.5 months, and got them for $85 plus shipping." When you could have bought them new easily. But where's the fun in that?
The presiding wisdom is only OEM ones are decent. I know some folks tried to cheap out and get Emgo brand look-a-likes for the GSXR ones, and found out why they were so cheap. Vibration. I worked in a dealership for a bit, and every set of aftermarket mirrors we sold, regardless of brand or bike model, came back within days for OEM ones.
Step 1 of the swap. Original engine in the storage cradle. Salvaged frame with legs. I hope to spoon the HRT engine in tomorrow. Injectors returned and are ready for install. All 8 are now back to factory speck.
Waiting on SS silicone clamps (arrival tomorrow), new thermostat and a few more small bits. Hope to fire it up sometime next week.