I don't think the tips are bent up. They definitely are angled "up", but I THINK the tail pipe end is "angled up" so the tips look angled up. The dart is the same way, I feel. My '68 GTS, bought new, had tips "angled-up."
That is a bit of a pet peeve with me, also. It bothers me when they don't tip up slightly. That being said, I feel my 2nd Gen barracuda tips don't angle correctly, either. This bothers me no end, but the guy who did my exhaust didn't know any better, and I was fortunate I got anything, as it was an in-kind trade from years before.
