I previously converted my bench seat to have 12 inch travel front to rear I need way more leg room than factory designed in. I wasn't very happy with the manual operation with so much travel and one person operation the bench was hard to adjust without binding. So I converted it to electric adjust with 8 inch travel. Works pretty good now. Not sure any room left in back seat but I fit nice lol.
Rocky
see video link
https://youtu.be/TKMSNpxnDKE