i got a 86 sami that i have a 8 valve swapped into and running the  tracker five speed due to sami trans was broke. i been looking at doing a doubler to run the tracker t case as a crawl box and put my sami t case behind it. i see that Ott makes a kit and there is a waiting time for the case from them is there any other out there that i am not finding. or would i be better building my own, i see there has been several l that have and i do have full access to a machine shop as i am a machinist,  if i was to build one would there be and one out there looking for there machine work done, i have three spare trans sitting here i could cut apart and tig together to build a kit.  let me know with any info  you might have   thanks josh