On my 10.75:1 451 with 262/266 @ .050 camshaft, I have a regular mopar perf/OE style distributor
and all I did was use one spring from the Mr Gasket 925B kit. No tricks are done with the advance plate, etc.
I run 34 to 38 total all in at idle which is typically 1100+ for valvetrain oiling purposes, and there is about 20 or 21 degrees in the plate so the advance mechanism
which only acts as a start retard.
I've been doing this since the '80s on most with big cam combinations and it seems to work fine for me for street/strip purposes.
There is probably additional driveability improvement to be found in working with the vacuum advance, but I never took the time to experiment with it.
Pretty much identical to what I have done on mine. 38 is the limit with good 91 no ethanol I'm at 10.6:1 CR. I now have an add-on timing adjustment knob from MSD that allows me to take timing out from the drivers seat for varying levels of nitrous.
