hey mate, i have an ef wagon as a daily too.. mine is an factory XR6 one... my engine is good but i am having heaps of trouble with the bloody power steering leaking and rooting the alternator... think i got it sorted now though.. but as for your engine with that many k's on it just go and grab another one from the wreckers for a few hundred bucks and replace it... thats all i did with another EF i had..

...ray...