@quattro5v, the chassis is a 2001 A3 8L quattro, the engine is a 1999 AQA 20v. It has been rebuilt with forged rods, Mahle motorsport pistons, ferrea valves and arp bolts. The wiring loom of the interior is a 1999 pre facelift, and will only be used for the cluser and A/C. The wiring loom of the engine is a AUM for 2000 km initial roll, which will be done using the 317cc injectors in no boost 0- 2000 rpm, and then a Link G4 Storm with a new loom that i have made. My concern is how will I be able to use the instrument clusters as they need some sensor inputs directly from sensors that I connect to the Link ECU.
@Scott, thank you for the answer!
The car will only host 2 seats, the dash and door panels. Everything else is gone :-)