I "believe" I have just purchased the same kit on E-Bay. Obviously not installed yet. I have had a considerable problem with vapor lock (2000 - 500 E.F.I.s) on the port motor. The search portion of this site will reflect numerous other confirmations that the kit will work. I made a recent inquiry that "Trouty" answered, again with praise to the kit. According to Merc. the 2 fuel pump models started in late 2001-2002 and the problem has been eliminated. I would also be interested as to the method/difficulty installing the kit.
Also, I did isolate some of the problem, appears to be based on where the fuel was purchased.
Lets PLEASE keep each other posted.