Beautiful car that will be seeing an upgrade to Motronic 1.3.
1973 car will have a 1979 block with 1981 intake manifold with 1987 head with 1989 ecu and wiring harness.
Vanagon style injectors and Saab fuel regulator
M90 engine 218 stock hp will get the schrick 284 cam, and a serious port and polish.
Choice of Dinan or Turner chips.
Choice of c-tubes. 320i long tubes for torque and stock short tubes for high end.
The new Coupe King Stainless exhaust with M30 B35 manifolds.
Upgrading the ac to 1988 condenser, 1990 aux fan
Upgrading headlights to fused, relayed low beams with direct connect to alternator .
Leaving the body alone needless to say......