To my knowledge NW builds Katech TB and changes the blade to blue if I remember correctly. The only mods were the valve covers and fuel line.
Here is Billy's Zl1 which was the first install and I did mine the next week. We both ran 9's at Camaro Fest. His best was 9.82 and mine was 9.77 and we both had traction issues that weekend cause the track was greasy from the heat and DA. It was both cars first time out that weekend. I've since went 9.65 on 14 lbs of boost. Best mph was 145.
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2022 Lt1 6.2 A10, Maggie 2300, THPSI Port Inj/10 rib, Rotofab, E, Nickey, SCOL, Griptech, RC Bandits, Hoosiers/MT 9.80@142.96 1.44 60ft, 6.34@112 707/669 RWHP/TRQ. 16SS Maggie 2650 9.41@147 1.35 60ft, 5.99@119. 16 C7 A8 10.90@128 Bolt on stuff