Yeah they come out in heaps of cars I got mine from a celsior. Just to give you an idea about how a v8 sit in these old corollas, I would assume that a ke30 bay is a bit smaller though. But I would try and get my hands on a bare engine or something and get stuck into it really, haha. No point sitting on the computer all day looking for how to get it in there best way is to just go for it, trial and error.
One thing as well if I don't put in a whole new tunnel will be an engine out job to do a clutch as not enough room to slide the box back, but the way I made everything else, to pull the engine and box out and do a clutch should only take a half a day if that so no worse than doing a clutch on an evo which mitsubish quote 14hrs to do one, haha.