How the independent 84-car restomod differs from the original Group B homologation model, what HSR is promising, and what a US buyer should verify before applying Type 859 fact Current information Builder HSR Manufaktur, an independent company with no factory Audi affiliation Project status Limited-production restomod in development; no independently tested customer car yet Donor vehicle Period-correct Audi Coupe B2 chassis Body construction Carbon-fiber panels over a shortened and reinforced donor structure Engine Heavily modified…