With the Vantage GT2 Aston Martin is the only manufacturer to offer cars in every GT racing category: GT1 – DBR9; GT2 – Vantage GT2; GT3 – DBRS9; GT4 – Vantage N24.
The Vantage GT2 was designed to run on either standard race fuel or E85 bio-ethanol (where regulations allow).
(Source: Aston Martin via Autoblog.com)