Exactly. The whole reason for SFI was so that testing could be established to prevent variances in manufacturing and safety tolerances. SFI spec components have all earned their stickers with rigorous fault testing. They work hard to make sure SFI = Safe.
Many manufacturers have stepped up to the plate for us diesel folk, but if you do have trouble finding an SFI spec component, make it known. NADM and others can help you source one.