I would guess, based on age, you are going to need a receiver, four standard servos, and a flight battery. You may also need a power switch, and maybe a servo extension or two. I have had excellent luck with the HS-311 servos from HiTec, and they are only $8 each. The base model JR standard servo is good too, but is closer to $13 or 14 each. If you don't have a transmitter, you will need one of those too.
Please post some pictures! I love reviving old glow planes!!