Towing with a 66 Barracuda with a newer & rebuilt 904

i would install the largest tranny cooler I could find.....and maybe add a deep tranny pan...

Dont know what route you are taking but there are some pretty steep grades on I-40 and I-15/I-70.....I would be worried about the brakes on the barracuda being able to hold on some of the downhill grades.