just looked at the vid.
that is digifant 1,
the basic conversion involves throwing aall the kjet stuff in the bin, metering head, warm up reg the lot. the 5th injector can be kept to fill the hole of a plug made to fill it. the isv controller gets junked as well
you need a 16v conversion fuel rail BBM do them or you can look on ebay or just have one made.
the traditional way means fitting g60 ecu and loom.
fitting it is actualy the easy bit but to get it to run right the ecu needs ignition and fuel maps sutable for the 16v whitch is going to be the hard bit.
chould fit a 60-2 toothed wheel pickup behind the flywheel and fit digifant 3.2 as used by the abf then everythign is much closer to optimal to start with. or just fit and ADL ( if want 1.8 ) or abf for 2.0.
most 16v digifant 1 conversions are just a stepping stone. to prove it all works then a glader or turbo gets bolted on