Mines pushing 400,000 and still goin strong. Picked it up from a mate when it had 370,000. Stacked it 2 days ago though. Just after i spent $1000 restoring the front end after it was stolen. ouch....
as for theoretically RIP @ 400,000...i rekn thats a load of crap (at least i hope it is, or that means mine is goin to pack it up any day now). I've seen a couple with nearly 800,000!