A guy local to me has done a few sets of granada hubs to US 4.5" 5 stud,
bit involved i think as the original holes need milling out to the correct bolt circle, then top hat type spacers made to go in these holes for the new wheel studs, dont think you can simply redrill between the existing holes as the back of the studs foul on the calipers, the original studs are recessed into the hubs and sit flush to the inside face,
think my mate charged about £100.00 as it's not a quick simple redrill,
but once again you'll probably need someone more local.