A "how to" forum with moderated step-by-step threads with topics like:
"retrofiting oil squirters on xxx engine"
"xxxx copper head gasket installation on xxx engine"
"installing the 2uz crank in a 1uz block"
and so on...
Add some pics, a note of wich tools that are required, complexity, approx time consumtion and cost... if then moderated tightly and all threads is kept "clean" it could be a goldmine!! and easily give an overview of the tuning of these engines. =)