I'm swapping a 4L80 into my 1997 K1500 Suburban w/5.7. I've read the threads, but can't find the part number I'm looking for. Hopefully one of you can help. Looking for the GM part number for the flex plate / torque converter dust cover. All I can find is the number for the 5.3/6.0/4.8 cover which I understand is different.