20's on an 84-88 toyota. what do i neeed to do?

I wanna put some 20,s in the back of my 88 and was wondering if anyone knew or knew of someone that has done this and what I would need to do. Like what width rim and what backspacing, and what size tire. any info would be sweet. pics would be awesome to.

ask loasain, he'd know all about it.

Just on the back... DO it all the way around. loasian is running 20's all the way around and he drove that bitch from Iowa to Cali New Year's weekend...

loasians truck is so clean im also thinking of runnin 20s all the way around