Those are some very quick researches for a C15 DTM idea I had. I want to make a mod for Assetto Corsa, as a continuation of the C15D I created last year. I found some FIA papers on homologation of DTM cars, and with some some very imaginative interpretation of the rules (a sport in itself) it could be done. I'm trying to stay period and brand correct. So I'm using 1980s Citroën visual style with big bold blocky shapes, à la BX4TC or Visa Mille-Pistes.
For the motorisation, I'm still unsure if want to use a PRV (the same engine used in the 155 V6 ti) in 4WD or a i4 in traction... Time will tell!