Which IMS solution?

[kk2002s]

Ok I'll jump in even though I have not done the IMSB
Personally I would go LN Dual Row. Now your year could be either dual or single and you can't tell until you pull the Fly wheel and I believe the IMSB cover will indicate which.
Now it's my understanding that LN makes a Dual row for both an original dual row replacement and a dual row that can replace the original single row.
Just my thoughts but it's your $$$$

Oh and this question may have been asked in the Billions