I have two spinners and two backing plates for sale for an IV-P with the
Hartzell three bladed
prop.  One set is as delivered from the factory with our kit.  It has no
work done.  The second spinner is cut out where the blades pass thru and the
bulkhead (aluminum) has all the nutplates installed.  This second set has
flown for about 100 hrs and is in good condition.  I'm asking $100 plus
frieght for both sets.  For that price you can't figure out how to cut out
the holes or install the nutplates on your blanks!   Usable on experimental
aircraft.
Contact separately:  Walter Dodson
                               wdodson@bak.rr.com
                               661.823.7343