Yes aftermarket tank is vented I just wanted to make sure my factory cap would work with an aftermarket tank.Yes it will fit. You will need to know if the tank is vented or not. If it's not vented you'll have to modify the cap to work.
It wouldn't destroy the cap, IF it is drilled in the right place. But if you drill into the lock mechanism, which could be easy to do if you don't know exactly where things are, could easily destroy the cap. I think the hole should go all the way through the cap. to the outside. That would mean drilling it closer to the edge of the cap to avoid the lock and latch mechanisms. A new gas cap costs $55.Jerry, I hardly think drilling a small hole through the bottom of the cap, where it can't be seen, qualifies as destroying the cap.
Where did you find an Aftermarket Tank that is Vented?