posi unit needed
 

i need a posi unit for a 12 bolt or either a whole workin rear end with a big gear 3:73 or higher my 3:07 single aint cutting it i have another rear end with a 3:73 gear but no posi. will either buy a posi or rear end,or work out some kinda trade mine is workin good in truck now with 5 lug,im located in north Houston.....Steve