A few years back I was looking at a manifold for my A12 road runner and I wasn't sure if it was a production line or over-the counter manifold (it had the standard 6, without the CH6B). Before purchasing I contacted Darrin (Big D A12) and he told me there were multiple runs of the Edelbrock intakes during the production of the A12 cars. Some had the wavey 6 (early production) and some had a standard 6 (later production), and both the wavey 6 and standard 6 are accepted as production line correct. Some more info here. Link
1968 Charger R/T, 440 Auto, GG1;
1969 Super Bee, 383, 4-speed, T5;
1969.5 Road Runner, 440-6, 4-speed, 96;
1970 Duster 340, 4-speed, EV2;
1970 Charger R/T SE, 440 (496), Auto, EB3;
1970 Dart Swinger 340 (416), 4-speed, EV2;
1970 Corvette coupe, LS5, 4-speed, Daytona yellow;
2000 Corvette coupe, LS1, 6-speed, Twin Turbo, Torch red.
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