As far as I can recall the 10.4 inch clutch and p-plate fits either factory flywheel, but the 11 inch units only fit the larger diameter wheel. I seem to recall it is more an issue with the friction surface area of contact than the bolt hole spacings.
By all means use the 153 tooth wheel if you find this the simplest as far as exchanging parts. The starter you want to use will have both mounting holes in a straight line, not a diagonal.
If the block isn't tapped for the inner hole it is a simple mattter to drill and tap using the starter as a template. Just be sure it is lined up square and straight to the block!!
