You would be better off. Buying a new block from toyota and building it from the ground up and building it right, than trying to un-fubar some ones pos thrashed engine.
You really have no idea of what you are buying from e bay. Find a reputable dealer or a salvage yard anything other than an e bay engine.
Just buy a .45 and blow your brains out now and leave your wife the cheese.
Find a cressida engine and go that route.
You're buying someones old pita if you buy from e bay.
Check out:
www.jasperengines.com
I hope this helps. Spend your money wisely, and do your research to the MAX, 1st.
Someone in this forum actually has a jasper engine. when my na goes out. I may go gte.