Complication to the install: At some point in this MG's life it appears it had another engine put in. I suspect it was a V-8 small-block of some sort. The trans tunnel at the driver's side had been HAMMERED to make it wider and there are holes drilled through the chassis rails to accommodate some other power plant motor mounts. The issue with installing the aluminum rad was that a piece of angle iron had been welded onto the frame rails just under the radiator. When the car was made back into an MGB (proper engine/gearbox) the shop doing it just made a relief cut in the added "crossmember" for the drain petcock. The aluminum version is slightly deeper than the stock unit and wouldn't mate up easily. First attempted to cut out an area to allow the new rig's drain valve and found it was hitting on the lower part of the rad itself. Final solution was to take my trusty SawzAll to that angle iron and remove it completely. After that it went smoothly.
That same piece of angle iron had given me grief earlier when I was rebuilding the car, it was welded too closely to the swaybar anchor points. The car had no front swaybar when we got it (1988) and for the rebuild I got a steering rack and bar from a B-GT, from TonyB, for it. Had to grind down some parts of the welds to attach the bar. Now that problem is no more. :smirk: