Locomotion answered your ? in his post. IHRA does accept NHRA competition licenses and chassis tags at most events. But I would certainly call ahead of time since you have no trust fund, your favorite term I might add. In fact, at PBIR Nitro Jam they let everyone that came race and gave a 30 day grace period to those requiring chassis certs. As for no box, IHRA rules! Where else can you race a National event in a box or no box bracket car?? I know those events aren't close to you westies but they do offer them, NHRA sure does not!