Cough cough cough..... http://www.jalopyjournal.com/forum/showthread.php?t=757378 http://www.jalopyjournal.com/forum/showthread.php?t=378761 http://www.jalopyjournal.com/forum/showthread.php?t=611175
I saw one once that was just like your PVC "pipe bomb" only it was made from copper pipe with caps soldered on both ends and a brass drain in the bottom. It had brass fittings for the overflow and it was polished up real nice...it looked good, wish I took some pics.
I just received my order from Summitt for a Derale cooling fan and a Dorman plastic recovery tank. It is 4"X5"X6", white plastic and mounts with two screws. It cost less than $8 and mounts on the inner fender by the radiator. It cost less to buy it new than the gas for a trip to the salvage yard.