Perkins T6.354 Crankshaft question

[MinGo]

So, I'm looking for a new crankshaft for my T6.354 and the big question is - Is there a difference between 6.354 and T6.354? I cant find parts in my area fro specifically turbo version, but maybe the engine block with the crankshaft and piston rods are the same for these two engines? I would not ask this question if only I would have access to part numbers.