I would look at buying the 24hr Nuerburgring ST-R for less money and swap the items for said series. I would have to contact them but I am sure I can get the car for about $75,000USD, ship it, swap the needed parts and still come in under $85,000USD on a proven endurance car. Good chance it has a VIN as well.
2001 Focus ZX3-Ours Sitting in the driveway, molested by the shippers
2010 Renault Clio 1.2 16V in Germany-Hers FOR SALE
2004 SVTF EAP/ST170-Mine
2013 Focus ST2 TS NAV SUNROOF-Hers