I'm looking into swapping a V8 or V9 EJ207 into my 2005 Legacy GT(blown engine); I plan on using the stock ECU since I'm assuming the V8 is 16-bit and the V9 uses an immobilizer? Of course, the ECU will be remapped. Would everything "play" OK?
As far as the actual engine, I've run into the issue of the DBW stock setup and the V8/V9s using DBC. I've read that using a 06-07 WRX or 04-07 STi manifold would work; but does this mean I need to swap over my TGV's too(or would I need the intake manifold's original TGV; assuming different bolt pattern), and would the original LGT TBW throttle body bolt to the WRX or STi manifold? Also, would I just be reusing my old engine harness(main thing is if I were to do top-feed conversion, they would still fit)?
Sorry for so many questions; I've been searching for basically a week now and couldn't find the exact answers I was looking for.