dont throw that gasket away until you trace it on the lim. match the lim to that gasket and it will work fine, if the lim is a little over cut already dont worry it'll still be good as long as the SC covers the hole.

what core did you get? WBS core, sseilmnop's core, and some others, do not use the front pcv so that wont matter on the lim. youll need to run a breather on the front cover or run a hose to the throttle body from the oil fill neck or front valve cover.