LA Pan with MAG gasket...NO WAY.
I would recommend NOT cutting the gasket. We use Kevko pans exclusively and they said the same thing, we called them to try and get pan made without LA notches but that would require buying 2500 pans. Just do it like the pics and you will be fine, if you cut gasket it doesnt work nearly as well. Use grey sealer only, not the regular red or blue junk.