spark plugs

[markbitters]

what number spark plug should i run in a 1977 200 20 hp. everyone says the flat bottom plug are junk, any suggestions

 

[Unbalanced]

Re: spark plugs

BUH-W

Who is this "everyone" and what are their credentials?

 

[westexasrepublic]

Re: spark plugs

Or The Champion Equivalent Champion L76v