Got a 2001 Kenworth T800. 13 speed.. I am currently just taking it apart to do the clutch and noticed there is no rear mount. There are a couple brackets on the frame and bolts in the top of the trans where one might would go... but this trans has been out before i got the truck. Ive put over 200k on it with no rear support... just wondering if i let it ride or should I find one to install? Is it normal for people to not put them back in?