I'm no expert, but those plugs do look rather dark. The strap is a nice ash though, so maybe it's just a positive cylinder pressure thing? Safe, slightly rich, AFR I'd guess.
Also interested in where the front end is going. I'm not a fan of cowl hoods, although I know yours had function to it and I can always appreciate that.
2018 M6 Mazda3 GT Hatch
2015 A6 SS w/:
Holden Bits|Warranty-Friendly Trinkets
2006 M6 GTO w/:
|Vararam|Ported TB/Intake|Kooks LTs|Magnaflow 2.5"|Pedders XA Supercars|Hotchkis Sways|4P CTS-V|LT1-S Twin|Billet Pro|G8 GT 19s|HINSON E&T Mounts|Whiteline, SuperPro, and Pedders Bushings|
John Doe's old ride. "1LE" GTO in progress...
1997 Grand Prix GT w/: