the gen 2 transom has the oil spiggart poking out of it,the gen 2 leg then has a hole for it to locate in, there for the gen 2 leg would bolt on but you would have to do somthing with the oil hole,
also the vertical shift shaft is to short for gen2 leg ,simple to replace cost about £30 for new shaft .
or you could by a new gen 2 transom shield from me out of stock with merc warranty for less than cost as you are a boatmad member.
good luck with your endeavours