I just installed my Lokar unit in my 68 Barracuda with a PG. It's pricey but a very nice peace. There's so little room between the trans and floorboard I don't see how a rigid tube could fit. It also comes with a locking plug wwhich could be used by itself in the car or when trans is out. I bought the 36" unit so that when I move my engine back it will still work. It's long!!