Right i know there is a few different turbo exhaust housings but I'm just wandering what the benefits/downsides are for changing them and whats the best to use. I have a std cossie t3 turbo on my zt engine and i've been told to put the .48 housing on it as it will have virtually no lag. what housing is on my turbo is it a .55. I know it says on it but i'm laying in bed and the turbo is at workshop lol. also what housings are on what turbo's from standard.

Any advice would be much appreciated