The old hydros are great 4 speed trannys, a deep first gear allows tight rear axle ratios for highway mpg's (like 2.79 or so) or killer acceleration (4.11's), I have a used set of finned aluminum valve covers for $150.00 & shipping from 29325 (10 lbs?) if interested. Offenhausers IIRC, used as wall art right now.
oldcarfart@aol.com