(or if it was me a 2” on on the rear and a 1” one on the front)
The offset of the Grandline's is the same as the standard Monoblock's
on the front of a Brab. I have a concern that 1" hubcentric spacers
fitted behind even a normal front Brab 7" wheel would have the tyres
getting darn close to touching the rear inside of the front inner arch..
(which is actually the chassis floorpan). That is even more possible
if the car has non-standard (lowered) suspension fitted to it.
The rears would not have that problem...obviously.