I don't think my tanks are epoxied to the core, but I'll look at it this weekend. In any case, no leaks in two years.
The one I ordered is what he calls a 'stock car' radiator, just a roundy-round generic fit. I don't remember right off hand what size I got, but it was just one of his stock units. IIRC, it was under $300. It is a double-pass type, so both necks are on the right. The stock car units used to be on the web site; you might look again.
The deal was that I needed a radiator RIGHT NOW, when some problem came up during testing the weekend before a race. I called them on Monday afternoon, to see if they had a drop in fit in stock. They did not, but the sales rep convinced me to order the stock car unit. They shipped it Tuesday, I got it on Wednesday; Phoenix isn't far from here. I took it to work Thursday and got the welders to fix me up (BTW, one of the welders commented that the Davis welds were really nice) and installed it Thursday evening. Drove to the track on Friday and raced Saturday.
I didn't have to cut down the inlet or outlet necks. The outlet is pretty close to the stock location, but it is bigger, 1 3/4" I think. NAPA had a flex hose that is 1 3/4" on one end and 1 1/2" on the other that is about the right length. The inlet is on the wrong side, but it is the right size. I bought two 90s, also from NAPA. One goes on the T-stat housing, one on the radiator. I connected them with a piece of thin wall (maybe 0.06" or 0.09"?) aluminum tube.
Given the luxury of time, I'd probably order a double pass unit with the necks on the left, and put a water-to-oil heat exchanger in between the lower neck and the engine.
OK, I'm off to class. I'll talk to you guys later.