Overheating issues

Did the old 440 have the same pulleys and fan on it when it worked properly?

All but the fan. It had a clutch fan but I think it was bad if I remember right.

Go back and be sure the water pump you bought is the correct rotation. Water pumps designed for serp belts typically rotate backwards

I only replaced old one (which worked originally for years) because I started having issues. Figured trying the high-flow wouldn't hurt anything.

I don't know what the timing is at.

I drove a couple miles and got stuck at a really long light, car hit 230 by the time I got back in the driveway. Popped the hood, pressure was too much for the overflow tank, it was starting to seep out from the cap. Top and bottom hose looked fine but as it cooled down they both collapsed (first time I've seen that, but also my car isn't normally at 230 before I turn it off).

Started the car back up after awhile and let it reach 190+, hoses were not collapsing. I found my temp gun and I checked temps on the radiator. Got the gun as close as I could and temps ranged from 95 to 165. One side seemed to be about the same temp at the top and bottom.

I can squeeze the bottom hose and hear fluid immediately come back up to the top to the overflow so I'd say it doesn't seem blocked but then I don't really know how it flows on the inside either. I can remove it and take it to the shop in the morning if you guys think I should.