I would prefer the 6 inch but I am not sure yet whether ill be able to afford that, gotta wait till the end of the month for it.
Just wondering, if i do the 2.5 will I have the option to upgrade it again later to the 6 inch?

 

If you cut the ears off your dif and the mod proves to not work out for you. Look me up, as I can reinstall them for you, better than stock.