318 with a 4.00 stroke crank

LOL

Moper...

I have a set of them too with the breathers.
The breathers are really nice heavy pieces too. Comes with PCV installed in one, and the other unscrews for cleaning.

Get both on ebay. around 130 bucks for breathers and the covers shipped if memory serves correct. Well worth the money.

These are especially nice due to the way the allen bolts are recessed into the cover, and that they are on the top so they are easy to remove.