Open diff to LSD
 

I'd like to put a LSD under my 93 b2200 and some shorter gears. the 3.90's are killin me and i cant hook up to save my life. im about to do a SBC swap and im wodering also if that rear end will take the abuse but for now i need an lsd or posi and some gears and im wondering wat other mazda i can canabalize them from. Thanks
Flores