M-20 decoding questions

[69rsss350]

2 fuel lines, disc front brakes, has the brake switch ( not sure what it is called) below the drivers door underneath. I have figured out that the enginge code means flint plant 04/14 but don't know what the TDR or the year is or what the bottom line of numbers mean. I have decoded the rear end numbers to mean the dates are correct but didn't know what rear end ratio the BM indicated or whether it is positrac. What is with the casting numbers of 3969341 NF? Thanks for your help!