I posted this in general, but thought I might get a better answer here. If the exhaust pipes on a 1997 355 Spider are flanged, does that necessarily mean they are stock and not tubi? Reason I ask is becuase I bought a 1997 355 Spider in August with Tubi exhaust. H ad a PPI done with a third-party dealership that confirmed it was equipped as advertised (with Tubi). However, a few people I've met who have seen my car have commented that my exhaust tips have flanged ends that look like the stock exhaust. The other Tubi exhaust pipe tips I've seen have not had these flanged lips.