TPI bolts
I just don't like allen due to rounding. Torx are actually better in that regard.
I'd rather do hex head, if they make a stainless kit, but I've never seen a kit. Do they exist ???
I have the Allen bolt set and never had an issue with rounding. With a ball end wrench I find the Allen bolts are more easily accessible. Especially the ones under the plenum. A little piece of masking tape on the end of the ball and they lock on. The only downside to the stainless is if you drop one, there not magnetic and retrieving it can be a challenge.











