you can get an adapter from jc whitney to use in the block drain hole- route that to the cold side of the heater, then have it flow up into the waterpump area.

__________________
1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.