I have a 91 1500 im swapping an ls1 into. I have a built 700r4 already in the truck that I want to use in the swap, but have a couple of questions. What wiring harness do I use? And what adaptor shim and bolts to bolt the torque converter up? I already have the cable from bowtie overdrive and i have read that a 98 ls flexplate is the one to use. Any info is appreciated. Thanks