thanks for the pics. so the spline on the earlier cases is the same as sammys? i have a toy case and that is an option. using a disconnect like the pic you gave seems like the easiest way to go i would prob build a better setup for the shift fork, i would be afraid of damaging it. by the way i will have pics soon of my long travel struts soon, had some delays with my machinist.
All samurai tcases have 26 spline input and output shafts. All samurai tcases have flanges on the input and output shafts.
89-95 trackick tcases have 26 spline output shafts.
The rear output on 96 and newer trackick tcases are 16 spline.
All trackick tcases have slip yoke type output shafts.
I haven't looked real close at the disconnect on the driveshaft on my pics, but I am guessing the driveshaft was cut and the disconnect pieces were welded onto the driveshaft pieces. Which is different than the samurai disconnects I believe. I think they just bolt inbetween the tcase and driveshaft flanges.
I would guess the reason for the disconnect at the diff end of the driveshaft is because trackicks have slip yokes on the tcase/tranny ends of the driveshaft. If you were to convert the trackick rear driveshaft from a slip yoke to a flange at the tcase end (and put a slip yoke in the middle of the driveshaft, like a samurai driveshaft....or maybe even use a samurai driveshaft), I don't know why you couldn't use a samurai disconnect at the tcase end of the driveshaft. Or, I don't know why you couldn't use a samurai disconnect at the diff end of a stock trackick driveshaft, without having to convert it over to a flange type at the tcase end. But, I don't know that much about the disconnects (samurai or trackick either one) and how the attach.
The best place to have a disconnect is at the tcase end of the driveshaft. That way the disconnect won't get damaged by hitting it on stuff, like it could if it was mounted on the diff end of the driveshaft.
I found the pic below of a disconnect. It looks like it is used on a slip yoke type tcase output shaft and a flange type driveshaft. But I don't have any info on it.