big problem with the vw scene is as so menay engines just drop in plug up and work anything that requires more is called difficult

the correct term is not quite so boreing.
for an engine conversion to be intresting nothing should plug or bolt up dircetly and meany bits need fetteling
difficult is when you have to reshape the hole the engine may possobly eventualy fit in, then you have to fabricate ALL the mounts, make your own adaptor plate for the gearbox, compose a clutch out of random ones, make your flywheel fit the clutch. then try and get a starter motor in there somehow and then make your own exhaust. before thinking about driveshafts

1.8T is easy done in a week, 3 days is plenty