Anybody modified the shifter detents for a Forward Manual Valve Body

I was cleaning up some today and found a complete spare shifter assembly. My Big Block is close to going in the car and I got to wondering about changing Valvebodies and remove the Bouchilion kickdown setup. Anyone made their shifter so it was fairly fail safe and if so pictures and description would be great. This a 72 setup with console.

Thanks,
JW