Replacing transmission lines

Why not just put the rubber hose for flexing at the trans and mount the metal hardline to the body? The front cooler is mounted to the body so there shouldn't be any flex there. If you mount the hardline to the body instead of the engine you can just run the trans line along the frame rail all the way forward with minimum bending required and no snaking around exhaust pipes. my $.02

I grew up on not having the option of just placing a call and having the premade parts delivered. Brake lines and fuel lines come on a 25 ft roll