I have a M2 on my car now with GM pump, I used the borgenson shim kit ( very easy) and shimmed my pump to match my rack, as for the years of T bird rack ( which I also got from NAPA for about $130) was the measurement of the 2 mounting holes, If I remember right, one rack has 14in. between the 2 mounting holes and the other has 15in. regardless of year the mounting holes is the deciding factor.
I also bought the adapting supply/return lines from borgenson.

Godspeed
MrC.