Sun rims and Shimano Tiagra hubs, Maxxis Detonator tyres.

Yep, tange headset, still original, as are... bars, forks, seatpost, brakes, rack etc.

The consumables have all changed, i.e. cassette, chain, chainrings.

I use Ultegra front and rear derailleurs - long cage of course, apart from the new wheels this is the biggest change along with the DA indexed 10s DT shifters, which I love.

The original gearing was 14-28 ... now 12-27 and originally 28/46/52 ... now 26/36/50, so apart from twice as many ratios the character of the bike remains the same as it was in 1984.

I have kept all the original bits.

The Miyata 610 compares favourably to any modern specialised touring bike available today, with the added benefit of a nicely made lugged frame.

Hard to beat.