It'll be about condition and originality, a lot of classic collectors want an original car, maybe the odd tweak but certainly not slammed on bags with an exhaust so loud it'd embarrass Concorde.
I love mine, it's a lovely drive and will be quick enough with a stage 1, at the same time it's a great every day car, fuel consumption is great if you don't floor it everywhere, the amount of room in the back with the seats down is ridiculous and it has just enough creature comforts to give you a bit of luxury without turning you into the sort of knob that thinks the car does everything for them so they don't need to check things like lights, indicate etc.