Well I pulled the trigger on a set of Doug's d450's.
Ordered them through my brother at AutoZone for $850,best deal I could find.
Next to start collecting up the parts for the 360 engine swap in the spring.
I had Doug's on my 65 Barracuda, with a 318 and later on a 360, I used a mini starter, no clearance problems . Had had them on and off several times. I recommend you do what you have to to make sure the slip joints do not oxidize and stick themselves together, because they will over time.