First of all, bringing a high capacity magazine into this state is illegal no matter if it is permanent or not unless you have a high cap mag permit which I highly doubt you have.
Second, those mags aren't permanent anyway. Once you remove the original mag, the high caps pop in and out without having to remove the trigger housing.
Third, once you install that pretty new high cap, you just created an assault weapon. I don't care where you are or what someone says. Bayonet lug, semi-auto, detach mag=too many evil features. SKSs have a special section in the law books all to themselves as well, although it's a bit sketchy and can be interpreted half a dozen ways. The way I read it, it's legal to do if you want to cut off the bayo lug but you would still have the problem of getting the magazine into Kali.
Happy belated b-day! Have fun, be safe, be smart.