I need a 6-cylinder engine for a Cressida 89 model

I need an engine for a 6-cylinder Cressida 89 model The engine name is 1g-fe If anyone knows where it's sold, please contact me because I ordered from abroad and all of them came thin and don't fit; I've lost a lot of money because of the pistons My only problem is that I haven't found the pistons yet Required sizes First ring: 2 mm Second ring: 2 mm Oil ring: 4.5 mm May God reward you with Paradise if you know and can help me