This would be my 3rd lsx swap,, my previous 2 swaps were into 2 wheel drive trucks now the 3rd one will be on my friend's 93 tahoe. He does not have alot of cash to put into the swap

He wants to keep his current trans to keep costs down...I have used 4l60E transmissions on my swaps,,, neither of us are 100% positive on which trans he has.. Basically I need to know what it will take to make his current trans compatable with the new engine.... we will be making his harness from a harness that's included with his engine.. we will be using 99-02 5.3 with the cable throttle body...