When you say “as in input for the component FITs in MIL-HDBK-217”, do you mean as the MIL-HDBK-217 component base failure rate? Or do you mean substituting the 217Plus result for the MIL-HDBK-217 result?

(As an aside, MIL-HDBK-217 doe not use FIT data (which is in failure in test per 1 Billion hours; all MIL-HDBK-217 ‘failure rate data is in terms of failures per 1 million hours)