904 vs 727

My 518 went in with no floorboard modifications whatsoever.

The crossmember WAS cut out and replaced with a custom brace that welded to the floorboard, and a new transmission mount was fabricated to fit the new trans and tie the crossmembers from underneath. The car also has 2" box subframe connectors. The chassis feels super solid now.

Currently I am running it as a 3spd because I'm still running a 2.45 final drive. My next project is a rear axle build using 3.55s and a new style 29 spline Limited Slip.

Once the axle is done I'll wire up the OD to function as designed (no toggle switch except to override the circuit at the track).