looking for merc power complete with headers and tails anything else out there

I do not have any "Merc" stuff, but I DO have the "anything else" part of your request. I have TWO 565cid short deck, NA engines with AFR 315cc CNC ported hard anodized heads, hydraulic roller cams/lifters, polished Dart intake manifolds, Holley 950cfm carbs, 9.5 cr, Jessel rocker arm system, titanium retainers, GIL 10 quart oil pans, MSD distributors, 600+hp @5400rpm and 561TQ @4400rpm, built by Dave Wesseldyk of WESCO.

These engines were designed/built for excellent docking/manuvering/drivability manners i.e. excellent idling quality/charactoristics. Fresh water only w/230 hours on the engines. I will post some photos soon. $12.5k each. The Stellings headers are available at an extra cost.

Call offshore performance spec. in fort myers
fla. they have every size merc. motor new and
used.

One 509 CID Dart/Merlin/Jesel/Diamond pistons/9.5:1 Demon sng. 632hp/573tq/5800rpms
W/10 hrs on them. Just dynoed last week.
22.5K w/stellings & dry tails
17.5K no exhaust
15.5K no accessories carb down to pan.
I have a matching pair if you need both.