Neutral balance to a 360 crank?

Just use this balance plate, then you can use a neutral balance torque converter or. Flywheel. Used this on my 360 when breaking it in in the run stand with a 318 neutral balance flywheel so I could run the starter.

Ran out fine no odd vibrations.

Screenshot_20210620-080715_Chrome.jpg

Summit sells them, might want to get 1/8" longer grade 8 crank bolts if using a flywheel. Starter still engages just fine.