OT I know but I have considered doing a GTM Rossa which is a kit car based on the other Metro - aka the Rover one. No longer in prod but there are a few about, and quite cheap.
Most are built with the 1.4 16v (95-105 hp) K-series but my thoughts have been based around the 1.1 8v (60hp) K-series which is frugal and rev-happy or the 1.5 Diesel (PSA 1.5 also seen in the AX or 106/Saxo) which were also sold in the Rover Metro but with stupidly low gearing (19mph/1000 rpm in a Diesel ?)
If I could merge a Rossa and a 106 Diesel then maybe that is something.