I have an 89 302 ho im puttin my motor back together after rebuilding it and it came time for the water pump but it turns out i had a brand new water pump from an 88 f250 with a 351w in it laying around, the two pumps look identical but im wondering if theres any difference in the impellars and volume the casting numbers i got off the 302 pump are E5ZE 8505-AA and the numbers off the 351w pump are E9TE 8505-A4A. If anybody can tell me anything about these itll come in real handy for me Thanks