Dorman advice needed

Hello all,

Where would it be possible to get the following spares for a dorman diesel engine ?????

01-PISTON RING SET 06 SETS

02- SMALL END BUSH 06 SETS

03-CYLENDER HEAD GAS KET 06 PIECES

04-TURBO CHARGER REPAIRING KIT 01 SET

05-TURBO CHARGER SET SET OF PARTS 01 SETS

06-MAIN BEARING 07 PAIRS

07-BIG END BARING 06 PAIRS

08- GAS KIT COMPLEATE (6 SEC WG 6 CYLENDER BORE 160mm) SERIOL NO. 1295/01 TYPE HC534D2 KCA 505 R.P.M 1500