brothers car is a base, and i know someone thats selling a Rear diff rome a 06 that he says it has LSD, an he wants $350 is that a fair price? To buy his and swap it out with the one in my bros car, any info or opinions would help, Thanks.

 

You might want to check in the for sale section and see what they are going for.

https://my350z.com/forum/drivetrain-419/

 

$350 for a VLSD equipped diff is a good price, typical street prices are in the $400-$500 range.

 

^^+1, that's a great price! verify that it's not an open diff and check to make sure that it rotates freely.