I know, but some noob might not unfortunately. Read your post from the perspective of someone who bought an RS4 last week.
As for keeping it on topic, nobody is doing due dilligence on engine rebuilding. Just JHM. So there’s the on-topic. The first company they brought on board to do the engine rebuilds found they were in over their heads. Someone in the US actually bought a built BHF direct from them I recall. Not sure what happened to them, but JHM found a huge problem in the process, and changed companies. Even then they found problems. They’re in for probably $100,000 or more at this point to produce built motors and even then are revamping the process still. I believe the final process (vs revision 1 or 2) they are following is exclusive to JHM so even buying direct will not be the same. So dicey…I don’t think I’d want to be a trail blazer. Being a trail blazer is expensive, energy sapping, and ultimately leads to unfinished cars that are sold off.