My effort.

If you really want the RS style stripes down the side/bonnet, let me know and i can add them no bother mate.

Mods include:

Smalled on it's ring
New rims (the mo's you suggested)
tinted windows a bit more
smoked rears/side repeaters
'KA' graphic over back arch/wing.

Rekon it looks the shizzle dizzle with those wheels mate! gotta get them, the rs style stripes is a good idea, but i dunno if they suit it, but aye, thats my entry, hope it at least helps you get some ideas etc...