The 260kw, then 290kw Boss engine powered the XR8 against the arguably
superior XR6 Turbo. Again, when combined with the right mods the XR8
could really perform and sound a lot better to boot!
XR8 5.4L Boss (FG) Kits:
Stage 1 - 320kw
The 260kw, then 290kw Boss engine powered the XR8 against the arguably
superior XR6 Turbo. Again, when combined with the right mods the XR8
could really perform and sound a lot better to boot!