Don't know if you can get it shipped there, but AutoRX is pretty much known world wide as a universal treatment for cleaning engines and getting out crap and long-term buildup from engines.

You have to do it in stages (cleaning, rinse, etc) and it would be about $40 for you application, but my 3.5 had the noisy lifter due the crappy, small Mitsu designed lifters that plug-up with even the smallest of particulates, and after a 2500mile rinse session with AutoRX, it's been quiet since.

If you really want the best site on the web for oils,etc, look up "bob is the oil guy"

Great stuff, but yea, my 3.5 had that as well.