The custom engine in euro 5 is fine, siemens system not the euro 4 denso that required valves and updates etc. It wants to be looked after though.
You can buy the shitty white base model customs for a lot less than 10k these days.
I would have a limited over a trend all day long. You want nice spec seats, ac, cruise, front and reverse sensors with cameras, colour coded bumpers, metallic paint.
A bonus is sat nav radio and both front displays are large colour lcd.
Plus you'll have heated seats and alloy wheels etc.
Anything less is just cheap drive it to death crap tbh.
56 350 2.2 130ps mk7 with 2 side doors
65 290 2.2 125ps custom with 2 side doors
07 350 170ps
Ids v86 licence + v86.04 update + xprog
hereIds map
here