You have the shed.
You have the tools.
You have the skills.
You have the labour force.......and buster.
Simples:
Buy a damaged 370 for little money, an R35 engine (and other necessary bits from a write-off) make good and put 'em to together, maybe with a wee bit of tuning, paint .....and then watch the other GTR's disappear in your rear view mirror