I had a 78 27 magnum with twin 500 HPs in it . ill post some pics - Bring it down , well do the install for you .

This is from 2001 - boat ran in the mid 80s .

Just an FYI to anyone that has not dealt with Jmemoli in the past, he is honest, knowledgeable and an all-around great guy to deal with. I would buy one of these engines from Jerry in a heartbeat if I had some extra $$$ lying around.

thanks Brotha !

Skippy - You should really consider this package. The main challenge is getting the exaust to clear the hatch sides. You will have to cut you hatch for just about any power save maby 350mpi's. I don't know how those log style manifolds work or how you get enough drop to the transom to stop reversion/in the out door stuff. But those motors should be well built with good internals and give you great performance with little effort.
Just my 2c - M

The logs worked ok, and i was able to run the exhaust out the transom . Glenwood makes the logs and are sold through CP performance now .
as i recall i think the engines were on 30-32 " centers -
The boat originally had MDS drives , similar to a #3 .
I ended up glassing the transom , and putting a set of Bravo 1 s on it . It was a great running boat .

cost of engines? sorry didnt read whole post just went strait to last page