been doing some thinking about what's best for my valver. it seems modified air box with panel filter works best.

what air box can i use on the corsa, bearing in mind ive tried a astra 1.4 SPi air box in the space where the corsas go, but it is huge in comparison to it and doesnt look like it will fit.

so am i right in thinking just use a standard corsa 1? or is there much difference in the SRi/GSi air boxes compared to the LS/Merit versions?