I see no issues, it's nice to have another take on the marque. The GT America is a GT3 Cup car adapted for the GTD class, which for the 2014 season had some more differences to GT3 than nowadays. We'll see how it'll turn out to be balanced against the GT classes in the game... but it'll fit nicely to the IER USCC 2014 mod either way.
Kunos themselves will probably release the 2017 GT3 Cup and 2016 GT3 R (and hopefully 2016 RSR). Those and this mod are all great cars in their own right and in their own race classes, different enough to warrant having them all in the sim.
And I'm sure it's a great modding exercise regardless. I'm certainly looking forward to the mod.
Kunos themselves will probably release the 2017 GT3 Cup and 2016 GT3 R (and hopefully 2016 RSR). Those and this mod are all great cars in their own right and in their own race classes, different enough to warrant having them all in the sim.
And I'm sure it's a great modding exercise regardless. I'm certainly looking forward to the mod.