I float around the classic car world* via my old man and they are always looking for the next thing. A few things I’ve picked up:
The KA (original, not the street and sport) are already considered the modern version of an original Mini: cheap, simple, fun to drive and cheap to run/repair. So a good one will be a classic, whereas bad ones will be modified.
A good 2002/3 M3 CSL is a bit of a find, never really gone down in value!!
An unmodified Nissan 200SX is also rare and sought after.
All TVR’s. Nothing like manufacturer going tits up to get the prices heading up!!
Unregistered MG TF’s – they are out there, I know of three in Cardiff!!
Honda Insights and Beats are being sniffed out by collectors nowadays. Values are still down low but they are almost always well-cared for.
The original Integra Type R is there already – rare and even rarer standard.
Honda NSX in any tune, as long as it’s standard. The Senna connection is enough to make them a classic on their own!!
Just look for cars that are/were different and people lusted after, even when the competition overtook them!!
* by this I mean 1930’s Bentleys, Maserati 250F’s etc 🙂