I think I had read Kolles is using the same chassis from Lotus P2, because most of the chassises in P2 are P1 capable by the regulations (as the new Oreca).
Here, some information.
http://www.racecar-engineering.com/cars/lotus-t128/
It's not a bad thing if the cockpit or core of the chassis is good. Audi is using the same core of the car since 2013.
Greetings