theres a guy on the club polo forum called mikeymk who raves about bike carbs, he built a bike carbed AEE which he fitted into a mk2 polo shell. Talking to him, he reckoned the whole setup cost him less than £150 to do and was around the 110 bhp mark. it had a nice bark to it, whether it had the bite to match I cant say, as he never posted any rolling road charts etc. from what i remember he used carbs from a 600cc bike, with the jets drilled. the inlet was a home-made affair using bits from B&Q plus some industrial hose. the bits from the diy store were used as stubs, mounted to the head, then the hose was used to connect the carbs, to the stubs. Looking at the install, it all looked very well put together.
however the same guy ended up ditching the AAE block in favour of an ABD as its a stronger engine and has a more revvy nature
He did have a lot of issues with breaking gearboxes though, but that could have been down to driver abuse. Personally ive never rated the AEE block. I had a mk4 polo with one fitted and found it utterly gutless, so can only imagine how painfull it is in a golf.