318 with 360-587 1.88 heads

484,out of the question.Personal grinds,by experience.3.55 gear,or under.31915 Crower Baja Beast.in a simalar 360,rev past 6000.Doesn't fall of 4.10s up,Crower 31916.1.88/1.60 valves,bowl work.Simply hang on.Those are personal references,anything comprable will work.