700R4 or stronger 4L80E [requires computer control], both OD .... need to add aftermarket crossmembers for engine side mounts and trans mount .... yes must have a trans cooler, best incorporated in the rad .... Lokar makes good shifters
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics