We could try to run some events unrestricted, just to give the opportunity to the drivers to try different cars.I have been looking at that pack. such a huge difference in speed though ? surely restrictions would need to be in place.
I helped with the balancing of these cars, the HF is similar pace to the GTA, 718 & Giulia TZ. The closest thing to the S1 is the Escort RS1600. The Ford is faster around most tracks I think but IIRC the Lancia is faster down the straights. We tried a few short races at Road Atlanta recently with the Fulvia and Escort and the Ford was too fast there. Maybe not at RIR with the long straight and high speed sections though. The 911 RSR 3.0 is much too quick for the little Lancia.The description of the Lanchia on RD says "the Car has been done following all Assetto Corsa feature´s, including dirt and damage texture´s and parts, custom collider, highly polished and realistic physics and it also been tweaked and tested intensely to match Alfa Romeo GTA laptime´s."
If you change your mind I volunteer to help with the BoP testing at Riverside. I know the track already.