rread97uk

Hello people! After a little bit of help with a Subaru engine! Basically we have an engine in a kit car but we believe it has the wrong wiring loom & ecu, could anyone tell me from these photos exactly what engine it is, what wiring loom it needs and what ecu it needs? Any help is greatly appreciated 😁 from looking at the codes and doing some reading im thinking its an ej207 but unsure! just need to know what wiring looms and ecus will fit!