Welding did not work as the end tank was too corroded and difficult to clean where the bung and end tank get real close. I tried to get another one today but it turns out what I have been using is actually a RX-3 oil cooler and the 1st gen unit is about 2 inches longer. With the way I mount it there is no way it will fit and I really don't want to re-fab the mounts and duct work if the 1st gen unit is prone to cracking.

I'll see what I can get aftermarket wise, but I think this kills my chances of racing this weekend at Road Atlanta. There's not enough time to get everything and make it.