My 1970 1300D 4X4 1ton has a holley perched on it's 392. Repair records say this was a replacement carb. What was the OEM carb for this application? Any opinions/suggestions on a carb to replace the holley (it's toast!). The dash has knobs for both a manual choke and throttle. Thanks, Steve '79 SSII and '70 1300D skinner@domain.elided