For cost and factory reasons
Chrysler would never replace the M8 1.25 steel bolts with only 5.5 mm of thread engagement in soft aluminum,
with say...
steel studs in much longer aluminum threaded holes and soft brass lock nuts,
but maybe students should read about this as an alternative.
You know I had the same exact issue on the 64 PB 727 I swapped into my 64 300 years ago.
Same repair was done.
My first duty station in the Navy was overhauling shipboard satellite antennas, aluminum castings with every bolt hole helicoiled and all corrosion resistant steel hardware. When we got them for overhaul you can bet cash money some of the hardware would snap off due to corrosion. I got real good at fixing that problem and it would have been damned simpler and quicker to have fixed a stripped thread than dealing with what we had. Once we had it all repaired and during final assembly every bolt got antisieze.
