I should point out that I'm pretty cool with any work that needs carrying out. I've been an engineer for 15 years haha. Was more thinking about order of engine tunes. But knowing I'll have to roll the arches for 18"s is deffo worth knowing. No real biggy but might be worth just going 17". I'm also going to build a mould for in between seat sub mount as that'll be easy to do at work. Also been looking into the whole double din stereo issue. Should be a way around that I reckon...?