The stig

Hey guys I’m restoring my 1991 g60, charger working fine but as engine is coming out makes sense to rebuild charger, any suggestion thanks

I'm new to this forum so hello all, I've a 1991 g60 Corrado, U.K. Import I've had for years will never sell, but my callipers are gone, I got a set of mark 4 callipers for the rear but they won't fit the front I'm no mechanic just looking for any advice thanks