Update to tha list:
Um, I'm happy.
Drove the car for the first time on Friday, to the car wash. Brought it home, did the windows and dash, and futzed with some MS settings. Headed over to Dale's to pick him up, do some tuning, and then head to Race City. The laptop took that moment to decide that it didn't like the water that my drippy sunroof fed it, and locked up. Luckily, Dale had another identical $50 laptop laying around, so we loaded Megatune up and headed straight to Race City. Ran alright.
Today I went for an hour long drive, letting Megatune's Autotune do it's thing. Concentrated on 1-3000 RPM, 20-80 kPa mostly, 'cause that's mostly where I drive. By the time I got back from the back roads, Autotune wasn't doing any more updating, so I started playing with the acceleration functions and idle.
With that 100 kilometers of tuning I did yesterday and today, this thing drives better on MSII than it ever dreamed of with MS1. Holy crap... I'm not talking about outright power, 'cause I haven't played with it like that yet, but where it used to be all jerky and snappy, it's now smooth and refined. First gear used to be only for acceleration, and second gear was kinda like that too - if I tried to cruise slowly in either of those gears, it would jerk and buck and get into this horrible rythym that tried to twist the driveshaft out of the car, but now I can creep along in 1st gear at 1500-2000 RPM (NEVER, EVER could have done that before) and it's like a Caddy.
I did open the throttle once or twice, and so far so good. Makes lots of power, lots of purdy sounds, and so far the oil pressure is holding fast. Will see what's waiting for me in the oil, though - hopefully nothing.
The True-Trac is a beautiful thing. You'd never know it's there until you stomp on it, and then instead of the right tire fire you get traction and/or a smooth slide. It's just like an open diff normally, but with one wheel on gravel and one on pavement, it'll spin 'em both.
The R brakes, stainless lines, and Hawk pads are quite nice. Haven't broken them in yet, and there's a slight pull to starboard sometimes, but they're high, firm, and very easy to modulate. I did get some wingnut drifting from lane to lane and I had to hit the brakes... WHAMMO, and that's something I'll have to get used to!
Possibly the biggest surprise is that the big wheels & tires... well, I can't quite believe it myself, but they really don't care if the road is rutted or not. It just goes straight, no pulling or tugging or wandering at all. Just about every tire I had on Virgos on that car would make it twitchy and jumpy and two hands were needed on the wheel at all times, but these are silky smooth!
A couple of things to work out still, though - a squeak when going around bumpy right hand corners, I still have to fix that steering rack, and I have to hook up the oil cooler and make a duct for it, plus a pair of chassis braces, but it's rolling. Cross your fingers, and it might just keep rolling for a while!