You wont be able to redrill the cossie 4x108 into a 5x120 because:
1) You cant drill 5 holes without overlapping and
2) a 5x120 is too big to fit onto the front hub as the holes won't be fully on the hub.
Granada hub will let you use 5x112 or a redrill 5x110. You won't be able to use 5x120 on the front as like above the holes won't be fully on the hub.
Is it for a 2wd or 4wd cossie?