I've seen the conversion over here in the Netherlands. Looks like a VERY nice install, cleanly done. The only thing I would change is to add some extra heat shielding at the exhaust side (install was in a speedster/vx220). If I recall correctly, he has already driven something like 70.000km with the conversion, and it hasn't missed a beat.
BTW, programming the ECU isn't the part that takes load of time, should be something like 20-30 minutes. Installing all the manifolds and pipework sounds like the big job to me 🙂
Mark