A hydraulic clutch setup doesn't necessarily reduce pedal effort, though. Ed's Charger is still mechanical linkage, but he runs a CenterForce clutch. It's held up fine thus car. Another friend of mine had a McLeod dual-disc in his '71 Charger R/T with stone-stock, restoration-correct linkage and never had a problem. Like I said, it's an easy, bolt-in swap with no screwing around, and A-body clutch stuff is not hard to find. Wear items are the same as B/E-bodies and not hard to find. Another option you might want to consider is a Keisler Tremec TKO swap. I know a couple of guys that have done this, including my friend with the '71, and they all seem to love it. Keisler sells them in a nice conversion kit, and though my friend hasn't had Problem One with his TKO 500, they do make a TKO 600. It's not likely you'd break either one.
The Richmond 6-speed is simply a Richmond 5-speed with an overdrive; the 5-speed is direct in 5th gear as is the 6-gear. The Richmond 5-speed was originally the Doug Nash 5-speed, and the reason for its creation was warranty issues with Corvettes in the '80s that used the "4+3" manual trans. That was a 4-speed manual with an overdrive that could be engaged in 2nd, 3rd, or 4th gear, effectively making it a 7-speed. It was a great idea and even a clever design, and when it works it's actually rather impressive. However, you were always a few clutch dumps from disaster, and it turns out more Corvette owners beat on their cars than one might think. The Doug Nash 5-speed was eventually the warranty-replacement trans for the 4+3. Neither of the Richmond transmissions has the rated torque capacity of the Tremec TKO, itself originally a replacement for blown Borg-Warner T-5s. The best T-5 ever made only has an input-torque capacity of 305lbs/ft.
While we're on the subject of transmission evolution, the A833 was originally designed as Chrysler's in-house improvement on the Borg-Warner T-10. Essentially, they just took the B-W design and increased its size by 25% or more, which allowed them to move the reverse lever to the main case. This was done because the T-10, which Chrysler used for a couple of years, could not hold up to the Max Wedge cars. It's also why all of the close-ratio transmissions used an iron case. If you wanted a manual-trans Max Wedge car, you were getting the balky B-W 3-speed (I think it was the T-85 but I'm not sure at the moment). Borg-Warner eventually upgraded the T-10 to the Super T-10, which replaced the Muncie transmission in GM's performance cars, but by then Chrysler had already been building their own 4-speeds for over a decade and even the overdrive A833 is much stronger than a Super T-10.
That is tonight's history lesson.
