Hadn't really thought of a price for it?  Would more like to trade off.  Would also consider a TRX 450.  Push come to shove though I could put a number with it. 

Not sure on who ported the motor.  It was done when I bought this bike from a friend.  Was told it was done by a guy here in Washington.  Like I said very mild.  Cleaned it up inside and a little massage work.  This is my 4th 500 I've had through the years. (not including the LT1100 I built)