Classic/Antique Car Repair: bracket ideas, j c whitney, bolt holes

Question
i have a 74 chev. p.u 4x4. just built a 1977 350 cu.in with 64cc heads. need brackets for alternator and power steering to go with long water pump. these heads have no bolt holes.

Answer
Travis
Hea- why did you not drill them and tap them prior ??
I would now try to go to ( j c Whitney.com) and( Summet racing.com) and see what kits they have for you. last resort  remove them and drill and tap them or send them to the shop so if they make a mistake they have to fix it..