the one old set i have does have the dual exhaust pattern on them...they are the standard length valves.

pretty sure they are the 810 casting.

5324522-Picture342.jpg (58 downloads)
Last edited by 70AARcuda; 06/30/09 01:39 PM.
Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)