How many miles until you notice the motor breaking in? I did the full resto back in '96 (And basically ongoing to this day hunting and pecking at little odds and ends in strive of elusive perfection.) I now have a whopping 3,7XXkm on it, and I now noticed, it really wants to rev, and pulls so much harder now. About time. I figure it still will get even better. I notice even compression when it starts. I love that. When I did the rebuild, I relied pretty heavily on Superformance and many specialty coating companies. Anti-friction & thermal barrier on piston skirts & crowns, DOW 9 & 17 on Mg parts, Jet Hot on headers. Yup, I did what I thought best back when I did it, and if I were to do it over, hopefully a good friend would set up an intervention and stop me. Seriously ~ ~ ~ no complaints on how it turned out. Time for another drive!