Just have a reputable exhaust shop make a custom one for you. Gexhaust in SFL just quoted me $360 installed and their welds look as good if not better than SSRs!
Thats almost half price installed and know Gehaust is one of the best muffler shops in FL so they are on the expensive side for higher quality work.
Not to take anything away from SSR or these Ark DPs, but you're probably paying more just for the name and storage instead of having one custom made for your Stinger.
Just my $0.02, but hope this helps and happy tuning!