I need a dimension!!!!!!!!!!! I talked to strange engineering and got no help

[nick s]

I just talked to strange engineering on the Strange D35 (DANA) spline spool I have and I am lost.
I gave the tech guy the dimension from the machined side (where the ring gear backside would be against) to the end of the flange (short side) and asked if he could identify which spool this is.
His answer was “I don’t know”.
Does anyone have a suggestion for me?
I would like to find out which one it is because I want to get 410 for it. Richmond sells a 410 ratio for 410 thru 617 Spool
and strange sells a 410 for the 354 thru 410 spool.
I don’t know which I have??????????????????
Does anyone have a spool laying around they could check the dimension for me.
The dimension I have is aprox 2.385”
I called Richmond and no help there ei