Hi Al this is what I did
I had a 998, 3 sync box from Mini Mad ^ Moke. First off I was just going to put it into the Van but I could not help myself first off I was just going to do the Head then I decided to do a Cam Also.
I sat back. You have to build the foundation First. Dr Mini helped me here. We looked at my collection and chose a 4 Sync Box and he replaced what needed to be change and put it together for me as I have no idea.
Do your Diff & gears first
This motor was a +20 998 Block & Crank but I had a 1098 Crank handy so that was cleaned up & balanced, then with the flywheel and then with the backing plate & clutch. Block bored out next size up +40 and pistons & rings purchased & also came bearing replaced
I chatted with Gr on Cams and chose his RE83 and I got him to clean up and a 202 head and set up valve faces for which I purchased. I also replaced the Oil & Water pumps, Timming chain, Inlet Manifold & full gasket sets.
Yep I was going to just put the engine in after a Clean up
Work from the diff up. Talk to people of what you want from your engine and expect it to take at least three time as long as you want it to. Any work you can do yourself will reduce the cost but in other areas it will just save you some time