If menory serves me corvette was the only one with 2 1/2" discharge, but they weren't angle dump.
To get close to what you need and not sure of the discharge diameters.
You need to find the ones with engines with most H/P
#3855163 l/h-66-67 passenger, truck with 283, 327
#3872741 l/h-66-68 283,327 passenger
#3896956 r/h-67-68 283,307,327 truck
#3932469 l/h-69-70 350,400 passenger
#3932473 l/h- 68-70307,350 passenger
hope this helps!
