basically all vw engines are the exact same just built in diff sixes in regards to plug and play. some things will be different like your fuel pump management etc. efi has a electric fuel pump and the carby and k/ke jetronic i think had a mecanically driven one. dont remember.
but otherwise it plugs straight in incl your speedo cables etc.
my caby doesent have a 2nd thermostat tho. to change between engine flow and engine radiator flow so some sensors from the efi wont plug in. but otherwise my gti tacho fits into my gt, cus it has a gti tacho in it 
if you need ne help just ask me cause im constantly screwin around on my car.
Golf MK2 Project
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