do i need self alligning roller rockers or not it my 91 305....i know i need the 1.5r narrow body centerbolt rockers but idk wtf self alligning has to do with anything and if i need it or not...

 

It depends upon your heads. Look at the holes (slots) where the push rods pass through the head. If the slots are narrow and hug close to the push rods, that will guide the push rods straight, and you won't need self-aligning rockers. If the openings are big with a lot of "slop" around the push rods, then you will need self-aligning rockers.
EDIT: Did you actually mean "roller rockers", or rockers to go with your roller-lifter cam setup? There's a difference.

 

i meant roller rockers yes, and im not sure if it is a roller cam or not, imma check...