I don't know if this might be any motivation for you,
but to fit the engine and gearbox (assuming you have most ancilleries) in alone yourself with the right tools or friends, can cost you about $200
$150 for Cortina 250 crossflow engine mounts
$50 or so for the tunnel section from the 200SX/Silvia
You can use the Silvia mounts to fit on the KE crossmember, just have to cut the block mounts to the desired angles,
trim off the rolla gear box mounts and fab on the silvia to the rolla underbody and use the SR box crossmember
Like i said this engine and box alone, i mean once you got it in there, you will twitch your fingers and want to get into it more
I'm sure ill get critiscized for this info, but I can tell you i have done this, and not just a Corolla also, there are many variations and this is one, being patient is one key factor when attempting this yourself/home