Carpet Question?

Hello,
I want to replace the carpet on my 70 Challenger. The car has a front bench seat and is a column shift. My question is: were all carpets for this car made the same? Are there different carpet patterns made for automatic and standard transmission cars? Four speed cars have the extra "shelf" area on the transmission tunnel "hump" for the pistol shift attachment. Does one size fit all? Any specific part numbers I should be looking for? I am considering installing a carpet...

Carpet Question?