i have a 1998 and up 4.3 l merc engine in my boat now when i go off of the sn 0l607470 i come up with 4.3l gen+ and 4.3lh gen+...how can i tell if my engine is in fact a L or LH.. i know one has a 2bbl and the other is a 4bbl.. the mercury marine site says the sn is listed for both the 4.3l and...
