I've got a model 11 in .223 Rem and have a .243 Win sportster barrel coming.

At Midway I've got a barrel nut wrench, reciever wrench, go gauges, bolt face and magazine box all in my cart.

Main question does the magazine box come with correct follower? If not can anybody point me to what I need there?
Here is the mag box: http://www.midwayusa.com/viewProduct...la=ProductDesc

Can I use parts in current boltface with the new one or should I order all the extra pieces (extractor, ejector...) while I'm at it?

Current firing pin is good for both?

Thank for any help, I've read the faq's and quite a few pages deep jut want to be sure.

peace.
unloaded