Not being funny but it is possible to get over 180bhp with a blown 1.2. Ive been tuning/rebuilding mini engines for a few years now and 200+bhp from an 8 valve 1293cc 50+year old A seires is not uncommon. Most of the lads running around with the Eaton M45 blower are running either 1275cc or 1293cc with decompression plates and knock out around 150bhp at a modderate boost levels. Im currently building a 1460cc 16v turbo engine that will (touch wood) be around 320bhp so in certain circumstances engine capacity isnt always important........unfortunatly, when this is the case, big wedges of cash usually is important.
I agree with most here, its pretty pointless to do when so many other engines are available that will give you good power....but if its more of a play thing then i say do it!!
LMAO at people who say its a piece of piss. No matter how good you are, its always tricky to get the bracketry and pullies lining up perfectly. Its probably a hell of alot easier to turbo a car than supercharge.