MerCruiser 898 350 228 305 Rocker Valve Covers GM 79961 79961T1 Cylinder head Flywheel Housing these both are the same

these both are the same blocks and used the same distributor)

Coils are the same on most of these What makes them different is the mounting brackets and wire length

Forward Revers Gears

This is a bit of mystery

40hp (Commercial) 1978-1985

MerCruiser 898 350 228 305 Rocker Valve Covers GM 79961 79961T1 Cylinder head Flywheel Housing these both are the sameThis was removed from an 80's MerCruiser 305CID V8 230hp Cyl Cylinder I O Inboard Outboard 4 BBL Barrel Alpha One Sterndrive Item Condition and Notes: Good Condition Please Inspect Pictures for condition Some surface Rust Will also Work With 305 230Hp 200hp 898 Will also work with MerCruiser GM 350 5. 7L 260hp V8 May work between 1981 1993 (Perimeter bolt style valve covers) May also work With Omc Cobra Stringer Volvo Part #'s Rocker Valve Covers: