Doesn't mean anything ;) Depends how it's been treated. An engine could have 300,000km's on it and have an oil change, filters changed, fuel cleaner etc put through it
every 5,000k's and still run like new. Compared to a 50,000km engine that's been raced with and revved to 8,000rpm daily with only a few oil/filter changed I'd pick the
300,000km engine :)
As for finding an engine, people on RC wreck cars quite a bit so just send a PM to someone wrecking one and see if motor is available/working!
Everyone on AE86DC puts a 4age/sr20/ca18 in their cars and throw away their old 3/4k's so could send someone a PM on that if you can't find one
on here.