Yeah he bought the massive ones...
Have another set of r34 gtt front calipers (310mm rotors etc) and z32 rear calipers...
Also another set of z32 fronts and rears...
Been there...
Big single exhaust on a vg30, wideband in tail showed 11.5:1. Single cyl running way lean due to injector not flowing however being masked by the other 5.