Heres my XW before i stripped it, its not the best pic because the front actually looks a bit higher than it is but it will give you an idea.
Here it has king springs at the front and the back leafs are reset so that on a level surface my sill panel sits the same distance off the ground right through.
Dont be fooled by the line running thru the middle of the car this can give the impression that you back end sits lower than the front but that isnt the case.
Dont get lowering block they arent worth it and with the springs being reset you can get any height you want.
Oh yeah the wheels and tyres are 14x8 and 14x7 with 265/50 and 225/50.
But with the same suspension i've had 15x8 and 15x7 with 225/50 all round.