Hey Smoke 'em, good luck on the pork tenderloin, even if your screen name leaves a lot to be desired.
All joking aside, let me know how it turns out. We have grilled many tenderloins, and they are a great cut of meat. Just make sure not to overcook it. If you foil it and let it rest, it will continue to cook.
What are you rubbing it with? We grill the teriyaki basted ones...delish!
Good luck, and Go Vols!