I've been on mission abroad for nearly a month and when i came back home I found the clutch hose waiting for me. So I spent Saturday fitting the exhaust and sorting out the clutch hose. Halas, the hose was not the right one so I had to jerry-rig one with the right endings. This is temporary until I get the right hose. Sunday morning, I was able to go for the first test drive, which was quite exciting. The car works very well, so well that I felt confident enough to take it on the highway. The 5.6L engine is very smooth, transmission works very well, rear end works great, no whining or rattling. Quite satisfactory for a first test drive, especially considering the huge mix of parts this project is, and potentential for something to go wrong at the beginning. On the way, the temporary clutch hose system came apart due to pressure and I had to drive back home without being able to actuate the clutch. Not too much of a problem as I once drove back from Poland to France wit a broken clutch cable, so that was a good training.
The good: everything works well together, no vibrations so far, rear end, transmission, clutch (apart from the hose), engine, all work superbly. Very encouraging.
What needs to be looked into: the clutch hose obviously, but also an hydro lifter which is noisy. The car sits a bit high in the front, so I may have to cut one coil out of these aftermarket springs I fitted. Speedo doesn't work, I wonder why. I hope the problem is not inside the trans. I also need to sort out the tacho and fit the internals of a V8 electronic one. I also have a small coolant leak that I wasn't able to locate exactly yet. All of this will keep me busy over the winter weekends. But basically, the conversion seems to be very sound, without any major flaw, or at least it's not obvious yet.