I had twin outlet side exhausts from Infinity - good quality and a hell of a lot cheaper than Librands. The quality was tested when I lost the rear wheel and they acted as skis!!!
T

15 Weissman GT5
11 Aero8 SS
21 Q7
23 RR
24 Def'r 130
1960 XK150 DHC
1970 E-type
2024 Huracan Tech