You will be in far better shape once Buschur has tuned it for sure.
Just make sure it passes all of the basic engine health test’s compression , leak down , and of course a simple boost leak test as well. Get a set of fresh plugs to go up there with. I can assure you that Dave will tell you to use the NGK coppers
Just make David aware of any of your concerns so that he can approach and address that car properly.