Replaced the water pump and now it is leaking around the so called water housing unit but I cannot find the correct part to order
Have you heard of a part referred as the water housing unit on 1995 Chevrolet S10
The only part I can think of is the gasket itself for the unit. It is possible it was pinched or folded upon installation creating a gap for the coolant to escape. Was the old gasket removed and the surface clean? With an older vehicle you may have to use some rtv silicone to help complete the seal.
poss dirty resealing surface at water pump