Id say the usual ie nice set of wheels of course

then id say lower it and maybe some wheel spacers so you'll have it sitting low and wide

Quality cat back system or even just the back box

then you have the personal touches ie tinted windows, ICE upgrade, badgeless grille, de-badge etc etc. Depending on what your wanting to spend you have the bumper upgrades ie R32 or anni etc. There's loads you can do that doesn't involve the engine just have fun with it

OK its the 2.0 and not the 1.8 T (which is what I have

) but its still a GTi and depending on what your wanting/willing to spend you can get it looking nice just wont have the power to back it up but hey 1.8's are costly to insure so I congratulate you on at least going for a VW
