high hump or low hump - tremec TKO

[i heart square bodys]

i have an 86 cab 2wd with the low hump in the floor , i am restoring the truck and am going to run an auto for a bit but i want to upgrade it to a TKO some day in the near future. i have a high hump thats been cut out of a 4wd and i have heard you need the high hump for a standard trans. is this the case for the tremec ? or just with the farmer 4 gear? i already have the carpet (brand new) for the high hump floor as well but if i have to run the low hump for the tremec ill just buy another carpet. anyone ?