i have an 89 k5 blazer. im putting a th350 with a np203 transfer case into my truck. it had a th400 with a np205 transfer case. is there any wiring to the tranny or transfercase? as far as i know there isnt, this is a carburated truck. to my understanding it should be bolt in and go.with the exception of the cross member mounting and cutting the floor for different t-case stick operation.