My 1984 Panasonic Race Build

Here in Michigan a handful of the Gravel Races have a vintage class. Last year I raced on vintage MTB’s . This year I built this old tourer into a gravel slayer. The build features a box 1 Prime 9 derailleur with a 10-50 cassette. I am running a Gevenalle 11 speed shifter set to friction to accommodate having two less gears. The last pic is me racing last year on my 1982 Cyclepro Skyline