[wootwoot]

gt2540 and the gt3071 and several other turbos are made much larger then gt2871r. The 2871 is just best suited to the t2 flange over the other selections. Bottom mount t2 flange and high hp goals dont really go together that well. The words direct bolt on dont apply to any of these really since things will need to be modified no matter what you switch to. Most of the things that will be done are kinda DIY and not such a big deal, just take time and some thinking/searching. Better way to say it is stock mount upgrade =)