Use the alternator light circuit to activate the ps pump relay. The wire from the alt to the battery warning light is neg when the engine is not running and live when the engine is running.
4e/5e have oil squirters built into the rods. Standard have a small drilling in the big end pointing up and forged have groves both sides in the big end.
Putting 5e pistons in will just make it a 4EFE with boost.
You could skim the oem 5e pistons down so they were flat top. That would give you more chance of running 1-1.2bar.
Bump.
Pictures updated and alpine cd/radio fitted.
Please no more questions about the number plate, it is not included in the price and is in the process of having its original plate transferred back.