Gaskets for a rebuild

[coffeeguy]

Are the aftermarket companies(Sierra,WSM ect) fairly even in quality? For a v6 Merc. I can't find anyone selling Merc pn 27-815791.

[Capt.Insane-o]

http://www.marineengine.com/newparts/part_details.php?pnum=MER27-815791A92

I've used tons of WSM/Pro gaskets without any issues.

[wrechin2]

Are the aftermarket companies(Sierra,WSM ect) fairly even in quality? For a v6 Merc. I can't find anyone selling Merc pn 27-815791.
Get what needed to be done to the block finished???