We need the following two items that you may kindly quote with the best possible prices & availability. both part numbers are OE Nos. for reference purpose that we need in repalcement only & these numbers stand for the assemblies but we need only Cylinder head & Cylinder Block.1. Cylinder Head Assembly for Perkins Engine Model: 404D-22 (GN) & 404C-22 (HP) for both models OEM Part Number: 111011030 2. Cylinder Block Assembly for Perkins Engine Model: 1103C-33 (DC) & 1103A-33 (DJ) for both models OEM Part Number: 4181V018