identifying rear-end gear

son of a *****.
ok, what if... i get a LSD 8.25 from a newer dakota? :) im not planning on being a hella hot rod anytime soon, so when i have the money to build up a nice 340/360 or whatever, ill probably have the money for a rear end too :)
i think what ill do is use a 318, rebuild it, do some little tricks to the heads and exhaust etc... a mild 318 build up... mebbe for about around high 200 - low 300... and use rear end gear to help my acceleration :) (put the car on a nice diet too, hell, i only weigh like, 145-150... im a skinny guy..)
the sad piece is, im too poor for even that right now. we'll see how it goes, im getting a raise pretty soon from the shop i work during the week, about to put in more hours out there too, so i may have enough money to fund my projects pretty soon. we'll see.