The headtube length is 152mm and postage to the US is approx £65
my P2 steerer is only 5-3/4"[146mm]to the thread end, i will continue to look........
1988 Specialized Hardrock [94 STX groupset-M730/M732 wheelset]
1992 Kona Lava Dome[K Mountainbikes]sold in Germany only [m730 groupset until I find a nicer Kona frame]
1992 Giant Cadex CFM-1 [mixture of m900 (crank/ftr and rear hub-wheels-cassette/frt mech/rear mech/cantis) m737 shifters-levers/rockshox judy xc]
1994 Raleigh MT 300 [bought new]
1996 Specialized M2 [still gathering parts, almost there]
2002 GT Ruckus 2.0 [2012 M770 XT groupset]