L200 4G63 engine and gearbox will bolt in. i'm pretty sure your mounts will work but if not its some basic customising. i think you'd have to cut the tunnel a little to line up the shifter though.
i've got pretty much the same car over here in nz, mine came out with a 1600 4g32 with a single carb but once i blew the head gasket i started the upgrade to a 4G63T SOHC out of a Galant with EX1800 turbo lancer running gear (gearbox, driveshaft, rear disc brake diff, wiring loom, and a few other goodies). just got to finish off some of the wiring and set up the fuel system for efi then she'll be back on the road
these cars are very common over here with the 1200 and 1600 engine's, there are also some EX1800 turbo's around. the EX2000's were only released in england and yours is not an EX2000, at a guess i'd say an EX1800 from the little spoiler lip under the front bumper and somebody must have repowered it.
if you're interested i have a small collection of photo's of modified versions on my computer, i could email you some if want, just email me at firstname.lastname@example.org