Their whole spiel is Customize, Control, Connect. I don't know much about this, but have started looking around. It seems to be an open code racing sim, and there looks to be a large community already. GT Legends cars & maps can be converted, too. I'm thinking it would be cool to make multiple 914s - 4 cylinder cars (1.7, 2.0 & 1.8 - hell maybe some bigger) 6 cylinder cars (2.0, 2.2, 2.4, 2.7, 3.0, 3.2, 3.6, etc) narrow body, gt body, sheridan body, etc... and have a cool 914 league.

Now, that being said, I can't do that, but I'd be willing to learn. Anyone up for getting involved?
The game is $39.99 by download.

R Factor's website is HERE

Also Race-Sim Central has an active R Factor community, but they are banned from speaking of conversions from GTLegends.
Race-Sim Central's R Factor

I'll give you 39.99 to come to my house and teach me...