Cutch pedal shaft support bracket hole location

[LuckyDog]

Can someone tell me where the holes in the firewall should be drilled for the clutch support bracket when modifying from an automatic to a 4 speed? my part came with no instructions.

for my 72 Cuda.

 

[rklein71]

see pic

 

[rklein71]

 

[rklein71]

Pics suck...
70 challenger firewall - Google Search:

 

[LuckyDog]

Thanks

 

[aussiemark]

Is there any small dimples (like centre punch marks) in the area, sometimes they have these marks to assist the workers who put them together.