You don't NEED a $1200 timing case, just $50 in tools (metric transfer punches and good drill bits) to add and relocate a few holes and the locator (dowel) pins.
You also need to build a nose for the front of the pan, simple fab.
Helpful hint: Once you replace the cam (or it's gear) and crank gear, use the back lash value from the cam and crank gears meshing to set the pump gear's lash value.
Use that to set the lash on the pump gear and locate the cover accordingly.
Once the cover is properly located, use transfer punches to mark hole/dowel centers and drill accordingly.
I'm right in the middle of doing one with a VE (Backwards? Not really!), but the cover mods and bolt holes needing drilled are identical for the P-7100.
Mark.