I'm no expert, IMO there isn't enough US90 parts for a restoration, unless all that's needed is an '72-73 serial number frame. Too many engine numbers, don't believe Honda sold 900,000 units in only the first 3 years since it's inception. Two position front forks are aftermarket or someone modified a stock set. The no lugged forks are like '82 and newer. But really who can turn down free parts.....good trading materials.
"HJ"
’84 YT60
’85 350x (423cc) with ’81 XL500 head conversion
’83 XR500 (628cc) converted 3 Wheel hybrid
’73 CB750 K3 converted 3 Wheel hybrid
’86 TRX250R chassis XR650L engine hybrid
’89 TRX250R (stock )
’90 LT500 Quadzilla
’85 FL350 Odysses ( water cooled head )
Lost (sold) but not forgotten ’80 ATC 110 (205cc on alcohol ) ’83 200x ( 222cc ) ’83 200x ( 185s eng ) ’85 350x ( stock )
added to the collection recently, (2) '70 US90 Aquarius Blue and '74 ATC90 Daytona Orange