I have a NP241 out of a 88 chevy full size truck (manual trans). I'm putting this into a different truck and need to know how to hook up a manual speedo. This t-case has i believe and electronic drive. Does someone sell a conversion? is there something i can get from a junk yard? also does anyone sell a SYE kit for this t-case? what would i expect to pay for a SYE?