My rx7 s2.5 DRIFT/DRAG project

[SICRX7 s2.5]

Hi im building a RX7 s2 for drag and drift. Im putting a RB25det engine in it with a RB30 bottom end, adj cam gears, high mount turbo manifold, T70 turbo, Greddy inlet manifold, 100mm throtle body, 600x300x100 front mount intercooler, ARP head studs, cometic head gasket, stage 2 cams, 4 inch exhaust, 38mm external wastegate, HALTECH computer, fuel cell, bosch 044 fuel pump. Im also running a VL commo 5 speed box for now and now im wondering what diff setup should i do im not sure what i want im thinking vl diff or 9 inch but i dont have much funds can anyone give me addvice on what i should do? thanks for looking.:)
http://file032a.bebo.com/11/large/2007/09/20/12/20522803a5600992041l.jpg
http://file041a.bebo.com/1/large/2008/06/04/10/20522803a7932636139l.jpg
http://file043a.bebo.com/1/large/2008/06/04/09/20522803a7932570521l.jpg
http://file041a.bebo.com/1/large/2008/06/04/10/20522803a7932636109l.jpg
http://file032a.bebo.com/11/large/2007/09/20/12/20522803a5600992265l.jpg
http://file041a.bebo.com/1/large/2008/06/04/10/20522803a7932635998l.jpg
http://file032a.bebo.com/11/large/2007/09/20/12/20522803a5600992153l.jpg

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