Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

ok my corsa is a 1.4 8v auto and i'm thinking about maybe upgrading the engine to a larger one,

now here is the problem WHICH engine to throw in?

i obviously dont want a stupidly massive 2.5 v6 monster as fuel cost are rising and i dont fancy filling up every 20 minutes
something around 1.8-2.0 mark but it needs to be a auto gearbox(disabled driver)

any help would be great

i'd go 1.8 or 2.0 8v auto them mate