Well first i would get a cg13de adn rebuild it fully forged everything (pistons,rods,cams) uprated parts every single one in the engine. Machine the engine for performance porting, boring out etc.
Then I would have a fully custom tubular equal length manifold made up and have a gt28rs turbo (a bit big but not finished yet). Have a supercharger fitted for when the turbo is not fully spooled so i still have power. Titanium full through exhaust 3".
Motec ecu with launch control and anti lag setup and a map to pass M.O.T
Have uprated gearbox and twin plate clutch and LSD. 4WD system with carbon fibre propshafts etc. Fully adjustable quantum coilovers. Fuly suspension setup, sway bars anti roll bars etc. 24 point roll cage.
12 pot brakes and uprated discs.
Now for the body i would get carbon fibre doors, bumpers, bonnet,boot and rear spoiler, mirrors, front wings. I would then leave all the interior inside and the outisde would be resprayed Midnight purple III.
That would make a wicked car lol too bad i don't have the money and the sense not to lol.