I say you do, if you live in a cold weather climate. I installed one on my 261 and plumbed it to the exhaust. It heats things up quickly and you do not have to worry about water leaks.
SWEET Sergeant At Arms: Old Dominion Stovebolt Society BUNS?!?!?!Where we're going, we don't need no buns..... 1950 GMC 450 1951 Chevy 1/2-Ton The GreenMachine In the Stovebolt Gallery