I can do the lot as long as you're after threaded and my steerer's long enough NOS YST black headset like you'd find on muirwoods palisades trail end of the '93 marin range. Unmarked dark matt charcol grey steel fork off lower spec Cannondale M' early '90's thearded I'll measure the steerer tomorrow and seatpost + riser bar I've got a few, you can have clean but undranded or tatty but branded.
£40 delivered for the lot.