Transmission Cover/Hump Problems 1972 4x4

[3LakesWI]

I have a 1972 short box, step side 4x4 I've been restoring since last fall. The truck is a complete conglomeration of mismatched pieces and parts. The wheel base was originally a 4x4 long box that was shortened (figured that out after I took the cab off). The truck itself has (or had) a 2 wheel drive cab. The transmission hump was changed to a period correct 4 wheel high hump. My problem is I can't get a molded vinyl from LMC to fit correctly. It won't seem to fit around the hump and in the driver footwell/gas pedal area. So my question is, was the 2wd cab shaped differently other than the hump? Everyone I've talked to says no, only the hump. LMC says the carpet is correct for the 4x4 high hump. Any help is appreciated.