2.5L Mercruiser Exhaust Manifold

[ddp]

I have a 1967 2.5L Mercruiser Engine with a cracked exhaust manifold. I've found one for sale online that looks correct, but declares it to fit only as far back as 1968. Is there a difference from the '67 to the '68? If so, does anyone know where I can get the correct manifold? Or, is it possible for the cracked manifold I have to be fixed? I'm completely new to the entire boating world, but trying to learn. Thanks.

 

[warthog5]

Inboard or I/O exhaust is a consumable item. In Salt they get replaced every 5yrs.... You've got me if a a '68 will fit a '67.... But...It's the Lil 120.... 4 cylinder and I'd bet it would fit.....You may need to do some upgrading?

 

[ddp]

Thanks for the information. Yes, it's the 4 cylinder, 120 h.p. engine. Being the novice, what upgrades do think might be needed?