to my knowledge one MUST have the 20v ignitor and coil. The AFM will work also, or you can get one from a 3S-FE if for some reason it is bad. While its all out is also the perfect time to put a flywheel in too

I also did water pump while it was out just to be safe.....
mine is not finished, with that said most of this info is just regurgitated from elsewhere on this board.....