Any thing can be done with time, patience and most importantly, money.

As you say you don't know much about engines, so I'd suggest you follow a few of the earlier comments and use a-series or SR.

The SR would be a killer!

who me?
stockish atm, but have worked a14 and celica 5-speed to go in

What running gear have you got in your ute dude?

go one step further and get an 18rg out of a celica, twin cam 2L with 44mm? solexes.

Dunno what type engine it is all i know is that it looks like an early Ford escort 2.0ltr engine, over head cam, Belt driven, with a protective cover over the belt, i dunno much about engines, incase you hav'nt guessed. what ever engine i use i want to use my DGAV Webber (Designed 4 2Ltr), bonnet has to close still?

or an l20b,though you have to use a 180b crossmember.or you could just fit a stock a15,which fits right onto the stock crossmember.what sort of a toyota motor is it?
it could be an 18r,a 3s,or even that awful starfire 4,which is 2/3's of a holden 6 cylinder.
is the toyota gearbox a cable or
hydraulic clutch?

Get into it with a tape measure mate. I've never heard of this conversion so I would say you will be flying solo on this. If you're keen to fit an atmo 2.0 litre why not the SR20DE? This has been done plenty of times and you can buy off the shelf crossmembers etc for it.
Regards Matty

u could if u got the engine mounts right and if its not a fwd lol good luck what is the engine code

Anyone know if it's possible to fit a Toyota Corona 2Ltr 80's??? engine into my Datsun 120y sedan 1974? dunno about a gearbox too?