B & M shifter question

Hey guys.I plan on getting the B&M shifter pro star i think its called that anyhow you say routing and heat is a problim whit the cable.I have a 69 dart with 727 tranny i could use a few tips.i was told if the cable you get with the shifter is too long we could by a shorter one.would this help us all out? thanksssssssss