This is just the info I've been givne or have found
1999 Baylinr Capri with Mercruiser 4.3L Thunderbolt Ignition (sn 0L323553) with an Alpha One drive (sn 1.81R)
Just got the boat back from my wife's family, it has been in the garage all winter.
Back at the in-laws; clean up the boat...
