I have a 68 2 dr sedan, /6. Any suggestions on how I can get a better
ride and lower the cab noise level? This is a low mile (57K) car and I think
the suspension is all original. I'm not looking for better handling just
a smoother and quieter ride.

A set of KYB "Gas-A-Just" shocks will smooth the ride quite a bit, as will thoughtfully selected tires. 13" wheels and tires make for a "squirrelly", noisy ride. P205/70R14 BFGoodrich Radial T/A tires on 14 x 5-1/2" wheels are much nicer. This, of course, in addition to a full front-end inspection and replacement of any rotted bushings and worn components, a careful front-end alignment and a full front-end lube-job.

As big an improvement as the KYB's are, you will get even more improvement , and improved handling from the new Edelbrock shocks. I have them on the front of my '69 Dart, and they took a car with bone jarring suspension and made it feel tolerable. My '69 has heavy duty torsion bars, solid aluminum lower control arm strut bushing, plus it has the tubular upper control arms with heim joints instead of bushings. This guy was brutal until I put the Edelbrock shocks on it. It actually got quite civilized, and handles better to boot. I can;t remember what they call them, but they have a valving that shifts from soft to hard, depending on the road surface. Look them up on their web site, and you will see what they are. These shocks are perhaps a bit more expensive than the KYB, but worth the difference.

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69 Dart Swinger, 230 ci slant, t-5 five speed, intercooled turbo, 4 wheel disk brakes, tubular upper control arms.