64 Dart GT First time out

Great Dart. I have one also with a 4 speed.340 .040 over ,.528 solid cam 273 rockers ,j heads,steel crank 10.5 to 1 pistons,high flow oil pump,etc,391 geared 8 3/4 rear,super stock leaf springs, rebuilt front end 10 inch brakes all around but I CANNOT FIND A ROUND SHIFTER BOOT PLEASE HELP!!!