Most Infinity cars started as a copy or a grab of several brands to one car.
The IF18 has started with the base of the Mugen MRX5
The IF15 did start with seveal components of at least Kyosho and Xray.
I believe the IF14 was also started with some stuff of the Xray.
So yes, the buggy is probably also be started as a Frankenstein model of some brands.