IIRC the 540 was good for very low 14s. Seems reasonable that you took the GTI even if it was Stage 1.
I've always liked those old bimmer lead sleds. So, is it a treat to drive? Super quiet and comfortable? I'm just a lil jelly, TBH.
E) the gti wasn't even racing.
I got a gti or 5 for you to run here I assure you the outcome would be different