Until you get the motor you wont' know what parts to get.. a 85 will have 302 heads which is good.. it's also a roller LA block which is good.. but some like mine have the roller provision but came with flat tappets.. if you are lucky and yours comes with roller lifters it will make a big difference in how you build..
P.S. if you pull the dist you can see the lifters to see what you got..