Well they're bolted on now with locking wheel nuts... so your not having them

Floor is just getting rattle can'd at the minute until the car gets painted, then the guy said he'll paint the inside pretty much free of charge
The intake manifold... I have done myself. I've used a range of air grinders, air saws, and die griders.. oh and files and sand paper. Its still not quite finished, and i've spent far to many hours doing it! But hopefully it should flow more than the atr one now on boost

and I've saved money on not buying an atr manifold.