One complete, scruffy, original Optima, and another basket-case that's missing a couple of suspension arms and dogbones, and has no wheels, tires, or body. I have the missing arms and (I think) dogbones. And of course repro tires and bodies are available, and I have my eye on a set of those Pargu wheels. So with luck, a bit more money, and a lot of work, I should be able to get a decent runner and a nice display model out of this bunch.
Be patient with me, this project is going to take as long as a Dickens novel...
Among the smoothest-performing shocks ever made for offroad buggies. As far as drag in the drivetrain goes, the Optima had a pretty good system. Where I've found drag is after bolting on the wheels tight; I highly recommend shims as the wheels' bearings can bind up when tightened with no shims or the wrong size of shims. Test that easily enough by spinning each mounted wheel after removing that corner's dogbone; it should spin smoothly. If it doesn't spin smoothly after bolting on a wheel, then the bearings are binding up because of pressure on the wrong area of the bearing surface. Other things to look out for: the little protective plastic sheet on the chain-guide covers was sometimes left on when people built the cars, and that thin plastic sheet ended up in the gearboxes. Lastly, a torquey motor that's difficult to spin by hand may make the car seem to roll with friction, but once the motor's fired up, it runs fine. That's easily tested just by removing the pinion gear and seeing how the rest of the drivetrain rolls. Lastly, you might end up opening your diffs up; they were very low-maintenance and very unlikely to get dirt inside, but I've disassembled scratchy-feeling diffs to find almost no grease inside. 
