Good Morning! 3 years ago I saw a post about sound set EMD 645D3A, which would be sets 645 assembled on a 567 block with its turbo D3 (turbo model in 567), I am very intrigued by the forum thread. for which in the week I was extracting recordings of the 645D3A, those samples were good, all very interesting that EMD engine! Those engines sound different by having 567 sets of 645 block power or 645 power set in 567 block! they have a different sound than their original engine.