This is a great thread. I just got my 103 back a few weeks ago. I went with the new SE 103 stroker + piston at .005 over. It is supposed to be 10.5:1. Put a .030 head gasket on it and should be 10.7-10.8. Went with S&S roller rockers, Wood TW400G gear cams,(.652Lift). HP inc 53 mm TB and compression releases. The heads were sent to Underground. Also Wood springs. We dynoed after break in with the stock TB and then with the 53TB. They were initially worried the much larger TB might loose velocity which would mean bottom TQ, but we were happy with the results. The TQ was the same to 3500. After 3500 both curves jumped up. I know your not going to believe it, but it has NO noise from the valves or gear drives. It was dynoed with the new PClll laying over the race tuner which I had before the build. The thing is smoother than when bone stock from Harley. I know it's richer as the plugs are now brown, not bone white like before. Also have Rineharts which were on from day one. The dyno is 124.5 TQ and 115 HP. The conditions were awful, with very high humidity (90%) and in the mid 80's. Builder talked to Bob Wood and they think in ideal conditions it would be 118-119HP to 128-129 TQ. The thing about pulls my arms out of their sockets. Mileage is good at the 180 mile mark, I put in 4.5 gallons. I used Bob Wood's close friend for the build and they had not done a CVO motor yet. Bob was in on build as they did not want to butcher the heads being CVO trying to get to 10.5. That's why I went with the new SE piston.
The heads cc'd out at 94. I used to have a little valve ticking noise in the head when it was stock and hot. Not now, they boosted the oil pressure with a new stiffer spring. I was very lucky as my crank run out was perfect. One other item to add was my oil pump was about to give up. Scarred very badly with 8600 miles on the meter. I was lucky to have it torn down when I did.