With the fork I’m not really bothered about it being period correct (although if that’s what will work best and not too expensive, I’m also not against it) but will most forks from later be too long even if they are shorter travel (60-80mm)? I’ve got some 63mm travel judys on the way from eBay. I think (hope) they are about 420mm ish axle to crown but I’ll just have to measure them and see when they arrive . I’d guess they are late 1990s early 2000s.
Oh good, I didn’t want to have to put anything else back on eBay
. I got a fancy schwalbe nobby nic evo tyre and a less fancy non folding but slightly wider nobby nic for the front. Also some 770mm bars and nice grips and (hopefully, if I win it on eBay) a shimano zee 1x10 drivetrain including cranks, shifter, derailleur , casette and bottom bracket. Which leads me to my next question, is there anything I need to consider when putting a modern crankset on an old bike? Obviously the old one is square taper and this is…two piece, I don’t really know the correct terms ? I think the bottom bracket is a shimano saint hollow tech. I’ve only ever removed and installed square taper bottom brackets but I’m hoping this zee groupset will fit an old frame ok and not be too difficult to work out 
I’ve got a wheel with a cassette body that takes 8-9-10 speed cassettes . I hope.
