Needs to pass emissions test, braking test, ensure fitment is standard and no modication or cuts or welds etc anything not standard needs have its own engineering report
Everything from the efi car needs to be fitted needs to have a ulp efi tank fitted proper hardline for the return for the full length speedo needs to be adr approved and operational
In saying all of this ring around and make sure your engineer is vicroads approved as not all are also have heard some engineers are tuffer than others which is personally not a bad thing but best of luck, my engineer wouldnt engineer anything if he hadnt seen it before the conversion through the build to completion but lots will
Good luck