Need some advice gents. Gotta 1979 Chevy 350 SB linked to turbo 350 tranny. 168 tooth fly with correct high torque delco offset bolt set up starter...,After repeated stranding due to starter lock and grind I have shimmed starter elevating lock up but have noticed starter is moving after several starts causing the dreaded grindddd...so, want to brace up the starter as these GM, weigh a ton and see if this will cease movement. Just cannot locate CORRECT brace for 1979. Any one know part for motor casting 3970010?