ok besides tubbing the firewall,wat else would you have to do to put 20's on a yota.
Dont Body drop it 4" and cut 2" off the rockers. Otherwise fall in love with 17s tires are cheap
if its standard move the clutch master up. you can use one out of a late model civic and it will work fine. they are shorter and have a remote resivoir. move the brake booster over. tub firewall. move battery. move fusebox and possibly relocate wiring. move or ditch charcoal canister. thats all i can think of for now. i have a 91 with 20s.