As far as I'm aware every 4G63 is an interference engine, so good condition cambelts are a must if you like straight valves.
Working on them: no idea since I've only ever done pads on it myself. I don't think they're too bad though, given other peoples comments over the years.
Horrible jobs: no idea.
Replacement parts: Mitsi charge a lot for oem replacement parts. Availability of aftermarket replacements is generally good, and there are several specialists who tend to be much more cost effective than sourcing through a dealer.
Evo 2 spares specifically: no idea.
Import friendliness: depends what you mean. Dealers can get hold of the manuals and parts easily enough, but generally a specialist will be at least as competent and often more cost effective than taking it to a dealer. "Ralliart approved" dealers have an engineer (or more than one) trained on the 7 and 8, but only a couple of places will have worked on earlier models before (although since the 4G63 hasn't changed much there's a fair bit of skills overlap no doubt).
Working on them: no idea since I've only ever done pads on it myself. I don't think they're too bad though, given other peoples comments over the years.
Horrible jobs: no idea.
Replacement parts: Mitsi charge a lot for oem replacement parts. Availability of aftermarket replacements is generally good, and there are several specialists who tend to be much more cost effective than sourcing through a dealer.
Evo 2 spares specifically: no idea.
Import friendliness: depends what you mean. Dealers can get hold of the manuals and parts easily enough, but generally a specialist will be at least as competent and often more cost effective than taking it to a dealer. "Ralliart approved" dealers have an engineer (or more than one) trained on the 7 and 8, but only a couple of places will have worked on earlier models before (although since the 4G63 hasn't changed much there's a fair bit of skills overlap no doubt).