Rebuilding a Ford Cleveland V8 - the Australian specific 302 cubic inch version.
One broken engine and one non operational one and turning them into a single good motor. American thin-wall cast V8 engines are fairly similar, but different enough that if you don't get them built you have to do a bit of puzzle solving (especially in the timing case). Plenty of youtube videos and forum posts on the Cleveland and it's been fun piecing it back together and learning about new things like installing cam bearings.
One broken engine and one non operational one and turning them into a single good motor. American thin-wall cast V8 engines are fairly similar, but different enough that if you don't get them built you have to do a bit of puzzle solving (especially in the timing case). Plenty of youtube videos and forum posts on the Cleveland and it's been fun piecing it back together and learning about new things like installing cam bearings.