I've been putting some miles on this car, and I'd say that overall I love it. It has a myriad of small issues, but the feeling of ~200 hp in a 50 year old Volvo is pretty sweet. I have surprised some people.
I think I finally figured out why it was running a bit hot. Well, first I had to purge air from the cooling system, which is not easy with the way I "designed" the radiator. Next time I'll make SURE the filler neck is the highest point. But anyway, the oil cooler was almost touching the IC which is very close to the radiator. It was heat soaking whenever the oil cooler thermostat would kick on. It never over heated, but it was making me uncomfortable. I spaced it out a couple inches, and temps are a lot more steady.
Unfortunately, all that work I did on the fuel tank was for naught, because it starves a bit around long rights (freeway on ramps). I'm sure it's better than it would have been with no baffle, but still...
The bad PCV set up and too much blow-by initially made the cam seal and rear main seal leak, and although I think the PCV issue is solved, the cam seal still weeps, so I have a Genuine Volvo one ready to go in. I do want to buy a leak down tester to actually see what's going on once the rings are fully seated. Who knows, maybe I screwed up the ring gap.
Anyway, I'm reasonably sure that my engine is going to keep working so now I need to focus on the rest of the car. GAZ adjustable rear shocks with updated valving are showing up today, and I have new rubber bushings for all the front and rear suspension. I also may get some spring spacers because now that I can drive fast, the car is definitely too low. Never thought I'd say that.
Also brakes. I have a 164 set up in the shed, but I want something with more bite. Going to take some measurements and see what will fit under my Crown Vic wheels.