hey you mentioned that its an auto, I’ve been down the bolt on route, i got the manifold spacers, throttle body, 2.5 Redback exhaust, 1.98 rollers k&n air filter with CAI. i got it dynoed, I’m a bit foggy it was either 123.5 or 133.5 RWKW, either number is not bad for a 10 year old eco with no tune. Anyway all I can recommend is FOR THE LOVE OF GOD DON"T GET THE THROTTLE BODY UNLESS YOU ARE GOING TO TUNE IT. it messes with shift points and gave me the shits to no end. As for the rest of it if you’re after a bit of extra power in you six and don't mind spending some money go nuts
. I enjoyed adding a new bit to the car every few months and generally being a tool as a p plater, plus I learnt a lot about the machine I was driving, a novel experience for someone like me having never been a car person until then.