Hi guys. Newbie here. Auto machinist/mechanic. These forums are great. Thanks for all the info. I just purchased my first boat. 96 challenger, single 787. I will be rebuilding the engine. I was told that it was fouling plugs, the head is off and the bores look good so from what I have read good chance the crank oil seals are bad. Either way i want to go through the entire boats to reduce the potential issues when its time to enjoy it. I read through the posts on using the oil pump and get the point and want to continue using the oil pump because of the variable feed to the engine based on load/RPM. Sorry... to the question. I understand the pumps seem to wear out after so many hrs? Approx how many? I haven't touched the boat yet so i don't realize what this pump is. Porsche 912 engine rebuild needs to get out of the garage first. Does anyone have and rebuild suggations for the pumps? Pictures? Buy new? Thanks in advance.