when we have warm weather around here i'm gonna take a stab at changing my water pump. I have a 40 h.p 2 stk (2004) in short of going to my local marina deal and buying one I've been looking at the one's on this site and they are....sierra #18-3394 and mollery #9-48209....fairly cheap . which would be the better one?. do you think the deal is gonna pull up the same kit # or something else ? I 'm pretty sure there price is alittle elevated. but all an all this should work for this motor ?