FORD RANGER TRANSMISSION REVERSE

I'm Trying To Order A Rebuild Kit For My M5r1 But I Am Trying To Determine If I Have A 30 Or 36 Tooth Synchro. The Slider Is 36 Tooth But...

I Have A 3.0l Auto (4r44e) 2000 Ranger, 202k. It Had Many Owners And Has A Long History Of Repairs. However It Is Still Fairly Stock....