The JDM HJ60 would be the closest to a CDM model except for the steering on the other side. ALthough I am not sure about parts availablity now from CDN Toyota dealers
I'd say HZJ7x series are pretty close to being the easiest and cheapest to get parts for if you know the right people. The mining industry uses the 75's and 79's now so just about everything is available ie brake, drivetrain, engine, front clip and doors, windshields etc etc. The only diff is the 24v and 12v. But that's what G and S is for - and there are other options as well.
The 80 series is pretty good now, but I am not sure about all the little engine bits and pieces that wouldt be the same as CDM models - might have to wait for something to come from Japan. Although, there are some importers on the west coast who have a pretty good selection of parts now - and G and S of course.
Bottom line is that you can get just about anything you want if you can search the internet and use a phone.
Regards,