doing a quick google search, i find the Cusco lsd is about $220 more than the TRD. i found the TRD 2 way for $966, and the Cusco for $1189 (i made sure it's the MZ). maybe i didn't find the best prices for both, but...
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1991 MR2 Turbo - 2.1L high compression stroker 3SGTE
2006 Tacoma 4x4 TRD Off Road - All-Pro front bumper, Old Man Emu shocks, Old Man Emu HD front coils, All-Pro leafs
1990 240SX Coupe - sold
2008 Civic Si Sedan