my 94 geo tracker had the water pump go out and then overheated on my this winter.  we think that we might have fried or cooked the engine and are now looking for a replacement.  we will get the used engine from a junkyard and my buddy and I will do the replacement ourselves in the shed.  I dont exactly  know what we are getting into and i could use some pointers. thanks and when i get it running i will post a picture.