dare i say i agree with Exo... get a GTD and remap it. 
Yes you know it makes sense Gilly at last 
does the GTD has the same suspension set up as the GTI?
Spring and dampers will be different to accommodate for the heavier diesel engine
i will rephrase... does it have the same sporty style suspension as the GTI? i.e. does it (attempt to)drive the same?
Its a little bit heavy at front end , but with a map that takes care of it

this going to be your next car ?