Andy, have you tried
* PBR
* or ask Mark if he has a wreck
* ask Tony Pinball shed if he has a wreck
* Rob from Bikecity
* ask Nino for any leads
Email Marcos/Bay Area/Mad Amusements/Classic Arcades/PBR/RTBB etc cause not every part is listed on all these sites and someone may have/or know of a Indianna Wrecked playfield. I will ask Martyn and see IF he still has a wrecked playfield for Indianna.  I reckon Jump on the phone n ring around.

Did any other machine use this board etc, like other widebodies like Twilight Zone etc ? Maybe look sideways at other builds. OR JUST MAKE ONE !