Because Im not going to be changing looms over when everything is working fine except for the engine and turbo, also the ibizas standard bhp is 150, which is the same as my golf...
Would it still be a difficult job? 
You need to check the engine codes are the same
So if i used his ecu id be alright? and by engine codes mine is an AGU T reg 1.8 20v Turbo..
Im not sure on the ibizas, I just know they run of the same engine, but the worst It can do is not work so I guess ill give it a butchers and buy his engine, and if it doesnt run, Ill sell it on i guess.