Here is round 1 of parts ordering, I will order more once I get it torn apart. This list contains Primary Chain, Cam Chain, Head and Base gaskets, O-rings, and Seals
HONDA CHAIN (50L) for 1974 HONDA CB550
23131-426-003 1 $108.05 $108.05
HONDA OIL SEAL 13.8X24X for 1974 HONDA CB550
91202-KFL-841 1 $3.15 $3.15
HONDA OIL SEAL (33X57X7) for 1974 HONDA CB550
91205-283-015 1 $6.34 $6.34
HONDA CHAIN, CAM for 1974 HONDA CB550
14401-362-003 1 $49.76 $49.76
HONDA GASKET, CYLINDER for 1974 HONDA CB550
12191-426-306 1 $12.42 $12.42
HONDA GASKET, CYL HD for 1974 HONDA CB550
12251-374-306 1 $57.74 $57.74
HONDA O-RING (4.9X2.5) for 1974 HONDA CB550
91301-426-010 2 $2.50 $5.00
HONDA O-RING (61.8X2.0) for 1974 HONDA CB550
91304-286-000 4 $5.31 $21.24
HONDA O-RING (11X2.5) for 1974 HONDA CB550
91310-426-000 3 $2.95 $8.85
HONDA RUBBER, SEALING for 1974 HONDA CB550
91318-300-013 6 $2.74 $16.44
HONDA OIL SEAL (30X42X8) for 1974 HONDA CB550
91201-300-003 1 $7.14 $7.14
HONDA OIL SEAL (30X45X8) for 1974 HONDA CB550
91201-323-005 1 $8.22 $8.22