i have a surge tank, 2 pumps and 3 filters mounted in my boot and to get it past engineering i had to make a shield for it to protect it from getting knocked around by stuff in the boot (even though mine is always empty)
did i mention thats the best colour corolla i've seen?
if you absolutely have to use a 6 cylinder, and it has to be under 2.6 litres, get a BMW all alloy 2.5.
...but i wouldn't be planning a conversion based on certain bargain engines you can pick up - there is heaps more involved.
not sure how the oil light would then work, it may currently be triggered by the ECU when the OEM sender reaches a certain value.
i have the OEM 4age sender hooked up to my ke20 oil pressure light and it glows brighter and duller depending on whats happening. i'm getting a VDO "sender/switch in one" unit so i can get my guage happening.
in some cars a strut makes a huge difference and some cars it doesn't do anything.
depends on how floppy the body is. my mates r31's interior lights would come on during hard cornering because of body flex.
a test was done on a e30 318is with a strut brace disconnected on one strut and some sort of marking system set up. the strut towers moved about 1mm during hard cornering IIRC meaning a strut brace is useless on those cars.
not sure about the ke70...