You can still find the .308 Izzy parts kits here:
1919 A 4 Full Auto Parts Kits
The supply is getting scarce and the price of a kit has damn near doubled in the last 18 months.
In addition to this, you will need a right side plate, a rivet set, a semi trigger/sear and the FA internals will have to be machined to BATFE approved semi-auto specs by a competent shop to prohibit FA operation.
You will need to then dip into your 401K to afford the ammo these things eat.