Regarding the engine availability - I think we are referencing two different sources and this is why there are different answers. Once upon a time, these complete engines were available through Ford Racing. Some of you may recall that the optional BBS wheels were also available through Ford Racing and the pricing through Ford Racing was more attractive that through "traditional Ford parts". Stan, you say "SVO" and I am assuming that is Ford Racing or perhaps another special division and you are likely correct that none are available.
However, I assure you that the complete engine assemblies are readily (and easily) available for purchase through Ford parts. I got an update today - received the exact same answer as Torrie - 13 are available as of today.
I recently purchased one of the engines and there are no special requirements and my customer elected to keep (sell privately) the old motor so he just ate the $7500 core charge. The bottomline is that I can sell one of these complete engines (motor + all accessories + SC + belts + injectors + harnesses + pressure plate and clutch, etc) for $37,500 complete. If you want to relinquish your core (with all of these same OEM accessories), the price is $30,000.