There’s only one thing we need to point out; since we’re running a stock wiring harness, the TA Performance O2 bung is mounted in a location that’s a bit further out than stock, so we picked up an extension harness from our friends at Caspers Electronics. We also replaced the turbo-to-downpipe gasket from our friends at SCE and ARP bolts now live where the old, rusted stockers once had.