It will be a 1.5 way.
We will be taking your info and giving you a call for payment, many options available (CC,paypal,cash)
The 180 is stronger but also much heavier and requires new axles, hubs and possibly brakes.
The R160 is lighter and requires less power to turn and with the upgraded LSD you won't have to worry about blowing the spiders out of the factory unit.
-Dylan @ DS1