Will a complete 300x fit 300PM mid

[Lost In Space]

Or what changes are required to install a complete ready to run 300X power head for replacement on a 300PM engine.

[merctech5591]

it would be a direct mount on the mid.

[Ospreyproduction]

I'm not so sure about that.

[Euroski]

Will the orignal wiring harness work?

[lake murray]

I talked with Mercury Racing and they said the 300x powerhead will not fit the 300 promax mid.

[Scream And Fly]

The engine exhaust adapter/tuner assembly is much different.