Two options now, money no object (nor sanity withstanding)
1 - Track: Get Mine's to do a Z-Tune job on an '98 R33 GT-R: Buy it, strip it, reassemble it with the best of breed, funky welding the lot. Give it back as a 600 horse 500 ft/lb monster wrapped in a Wise Sports widebody kit. And sit it on 19x12. It may not be a winner but it'll look superb and scare a lot of people.
2 - Drag: Get Abbey & a few similarly clever friends to build me an 5.2 litre V12 out of two RB26 and a couple of bits of custom pipework.

Put that in a stripped R33 GTS-25t shell after putting two utterly improbable turbos on the rig. Some fairly grippy rear tyres are probably a good idea.
3 - Road. My current car after it comes back from the bodyshop at the end of February.