Half width cooler isn't worth a squirt. I got one new years back at a cost of £240 to only replace it with another intercooler (full width) after about 2 years. Get yourself a second hand GRS mate you won't go far wrong I wouldnt't rate a half width intercooler for anything much past 200bhp, I know mine hit a ceiling of 199bhp at SCA years back becuase the intercooler just couldn't cope with what was being asked of it