I haven't done that swap on my jeep but I have swapped ring gears on several Harley Evo Motors, They come stock with about 110 teeth or 102 teeth on the ring gear 'Don't remember' The starter gear is about ten or eleven teeth. If you build 9.5-1 compression or higher teeth brake off. So I have used parts 'ring gears & starter gears' from older Shovel Heads Much fewer teeth per inch - larger teeth in the same space.
I went with this theory, If the OD of the ring gear is the same on the two ring gears 'and it was' and the OD on the starter gear teeth was the same in each case, 'and it was' it would work, And it does. I have done this conversion on some very fast machines and have had perfect success in doing so.
In your case the starter must fit check the travel or throw of the gear Is it the same? Then the ring gear must match ID and OD to the pressure plate exactly. The gear pitch is already established just consider diameters and distances to be critical.