It would be not so hard from a 1.4l engine upgrade to the Let,Originally Posted by BLK^BaRiNa
the only thing that is more to change is the brake (284x24mm).
Or take the Gierling/Lukas brake from the opel omega 3l 24V, Jg. 1991 up..(Holden Commodore) the the calipers and buy some discs from 298x28mm disc 4- or 5 holes circle
How to prepare the Caliper from the omega 3l 24V
EDS-Motorsport
Opel Omega 3000 24V