I checked the site and called them. The tech John was tied up but a woman semi-helped with questions. Answer first was they use fiberglass, then she called back saying just baffles and perforated tubes. Also flexible on sizing (ht./width/length) and 19" is doable she says. She said they also have a '1/2 Impostor' (not on their site) which is supposedly quieter than the full on model, but no material or design differences available. Worth getting more intel on when getting closer to pulling the trigger, thanks.
\'96SS SOB: SSRI, Herter Tune, Tri-Y II, SLP SS, 3000 Edge, F/HO bars, METCO extendeds and CV MMC, Bilsteins, currently Vredestein Ultrac Sessanta (315/35 rear)
\'96FWB BUW-Butt Ugly White: SS Bars, METCO LCAs, Koni Reds, PowerTrax No-Slip
Last edited by 96 Black; 09-16-2016 at 02:32 PM.