Also, unless ATI is doing it differently than when I bought mine, you will get a huge sheet of aluminum when you buy the adapter and will have to cut it out yourself which is a pita!
After cutting.....
When I did mine, noone could tell me what starter would work with it so I had to do some digging at a junkyard. I use a direct drive (non gear reduction) starter from a 97 Nissan pickup with the ka24e. I forgot why now, but a gear reduction starter would not work. Had to be direct drive with no "snout" on the face of it.