rigrite.com has all the parts and sizes you need, here's the list of parts and sizes from their website...
Backstay Clevis Pin / Sheave Pin - 1/4" x 15/16" grip
: CP4-28K:
Main Halyard Sheave - Aluminum w/ Bushing 1 3/4" OD
: HS PR-11180:
Main halyard / Jib Box SS sheave Spacer, 3/8" OD
: BS64-34:
T-Ball Backing Plate Tangs Gib 740 - All Shrouds
: Gib 740-5:
T-Ball Rubber Retaining Plug for Gib 740-5
: Gib 742-5:
Jib Box Ass'y, Complete, w/ 5/16" Pin
: HS PR-7625A:
Jib Box / Forestay Clevis Pin - 5/16" x 1" grip
: CP5-32:
Jib / Spinnaker halyard Sheave - 1 7/16" OD
: PP S5.3D8-6:
Jib Box Sheave Roll Pin Axle, 1/4"
: RRP 08-16: