This maybe what your looking for
http://willpedleyracing.com/shop/43-...cus-st170.html

As for bodge up ways i wouldn't have a clue,

But the ST170 has the duel mass flywheel for a reason, it's to soften the strain from the engine to the gearbox and it also keeps the clutch fairly light, And to be fair if you're paying that much for the conversion, OEM parts are about the same or cheaper.