Firenza and most of those other cars grenade are going up in price like they've got a rocket attached , I've been looking at escort mk1 or mk2 and a crappy can go for silly money like a shell for £3k and a good runner type 49 Mexico can be £15k to £25k the rs lotus mexicos are now in the £35 even an empty rs shell with the correct paper work is £8k.
The worlds going mad at the moment there even importing old cars from South Africa into the uk.