whats the best posi unit for a 10 bolt front end ?

[BCOWANWHEELS]

i,ve got a 1991 chevy 3/4 ton , 8 lug , 30 spline , 10 bolt front end. i want to install a posi or limited slip and i dont know which is the best ( most durable ) clutch type unit to buy. anybody with sperience in this front end that will help will be greatly appreciated.
bob

 

[Cperry]

aburn pro series is the best limited slip, the detroit true tracs are not bad either they are a clutchless design.