I would love to install 4.88 in my 85 4-runner im not sure where to start as far as obtaining them. right now i have 4.30's are they worth anything if i sell them, there isnt anythng wrong with them? anyways is it worth pulling 4.88's out of a donner vehicle and if so wich vehicles came with 4.88's? or should i spend the money on a new set up? sorry im full of questions thanks!!