Yeah that is the one I got, funny it was in stock when I order it. Must have got the last one. Summit is pushing their valve I bet. I didn't go adjustable for two reasons, the muffler shop owner is around my age (45) he might be 55 but he is very good and has a 1994 Mustang with like $30,000 in to it (his kid hates it, ha ha, claims its a waste of time and money). He built it sleeper like and drives it on the street (we have cool laws and dumb cops here in Michigan) Runs 130 mph in the quarter and he has no adjustable valve, or air bags, lol. He wasn't too happy with the adjustable ones, says they are picky to adjust.
2nd all the adjustable ones are aluminum. I wanted steel since its cold and damp up here, there dew every morning but mines garage kept but still.
My ride isn't a Chally but a mutt, ha ha. a 1979 Dodge St Regis, great shape and runs great since I built it like a 1969 car. All the fittings fir but one needed an adapter, the top back line from the M/C