I have a 1996 5.7 Volvo Penta. It has a low pressure fuel pump on the front of the engine and a high pressure pump above a fuel reservoir on the back of the engine. The reservoir has been destroyed by ethanol and is no longer available. I have to remove the old system and replace it with something. I would like to use the newer one piece high/low/reservoir system on the newer 1999-2000 engines part number 3861355. I have found no information on how to retro fit the newer 1999 pumps onto an older 1996 engine. I may have to replace the entire fuel delivery system with an aftermarket system. I thought about either mounting an inline Walbro pump near the fuel tank and running a return line back to the tank or even mounting the fuel pump in the gas tank. Anyone have any ideas on replacing the old fuel pump system? I cannot run my boat until I figure something out. Thanks for any ideas.