I'd space the frame to 135mm if its steal. Otherwise I think you're stuck with Sturmey-Archer @ 124mm or 116mm:
http://www.sturmey-archer.com/hubs_8spd_XRF8.php
XRF8
Description
• 8 Speed Internal Gear Hub no Brake (Freewheel)
• Available with 170mm or 155mm axle lengths
Specs for 170.0mm Axle
• Hub Shell Material - 6061 Aluminum
• Axle Diameter - 13/32" Slotted
• Axle Length - 170.0mm
• Over Locknut Dimension - 124.0mm
• Right Axle Protrusion Length - 23.0mm
• Left Axle Protrusion Length - 23.0mm
• Spoke Holes - 36
• Pitch Circle Diameter - 89.8mm
• Flange Width - 50.5mm
• Spoke Compatibility - 13g or 14g
• Sprocket Teeth - 23 or 25 tooth
• Chain Line - 41.5mm
• Weight - 1500g
Specs for 155.0mm Axle
• Hub Shell Material - 6061 Aluminum
• Axle Diameter - 13/32" Slotted
• Axle Length - 155.0mm
• Over Locknut Dimension - 116.0mm
• Right Axle Protrusion Length - 19.5mm
• Left Axle Protrusion Length - 19.5mm
• Spoke Holes - 28
• Pitch Circle Diameter - 89.8mm
• Flange Width - 66.0mm
• Spoke Compatibility - 13g or 14g
• Sprocket Teeth - 23 or 25 tooth
• Chain Line - 37.5mm
• Weight - 1480g
Gear Ratio
• Overall Range - 305%
• Gear 1 - 1.00 (Direct Drive)
• Gear 2 - 1.28 (+28%)
• Gear 3 - 1.45 (+45%)
• Gear 4 - 1.64 (+64%)
• Gear 5 - 1.86 (+86%)
• Gear 6 - 2.10 (+110%)
• Gear 7 - 2.38 (+138%)
• Gear 8 - 3.05 (+205%)
http://www.sturmey-archer.com/hubs_8spd_XRF8.php
XRF8
Description
• 8 Speed Internal Gear Hub no Brake (Freewheel)
• Available with 170mm or 155mm axle lengths
Specs for 170.0mm Axle
• Hub Shell Material - 6061 Aluminum
• Axle Diameter - 13/32" Slotted
• Axle Length - 170.0mm
• Over Locknut Dimension - 124.0mm
• Right Axle Protrusion Length - 23.0mm
• Left Axle Protrusion Length - 23.0mm
• Spoke Holes - 36
• Pitch Circle Diameter - 89.8mm
• Flange Width - 50.5mm
• Spoke Compatibility - 13g or 14g
• Sprocket Teeth - 23 or 25 tooth
• Chain Line - 41.5mm
• Weight - 1500g
Specs for 155.0mm Axle
• Hub Shell Material - 6061 Aluminum
• Axle Diameter - 13/32" Slotted
• Axle Length - 155.0mm
• Over Locknut Dimension - 116.0mm
• Right Axle Protrusion Length - 19.5mm
• Left Axle Protrusion Length - 19.5mm
• Spoke Holes - 28
• Pitch Circle Diameter - 89.8mm
• Flange Width - 66.0mm
• Spoke Compatibility - 13g or 14g
• Sprocket Teeth - 23 or 25 tooth
• Chain Line - 37.5mm
• Weight - 1480g
Gear Ratio
• Overall Range - 305%
• Gear 1 - 1.00 (Direct Drive)
• Gear 2 - 1.28 (+28%)
• Gear 3 - 1.45 (+45%)
• Gear 4 - 1.64 (+64%)
• Gear 5 - 1.86 (+86%)
• Gear 6 - 2.10 (+110%)
• Gear 7 - 2.38 (+138%)
• Gear 8 - 3.05 (+205%)
