WOW!
I just created 1973 Alabama for an order and their offense is incredible!
1973 was a special year, as the top 6 teams going into the bowls were all undefeated helmets (Penn St was probably fringe back then, but I digress).
When I notice a certain team having a great offense (especially a run-heavy one), I tend to compare it to 1971 Oklahoma. The Sooners squad that just fell short in one of the games of the century - it averaged 12.8 yards per pass attempt and 6.6 per rush. These are both insanely high - the 12.8 is among the highest ever (yeah, they rarely passed, but it paid off!) and the 6.6 is top-5 all time (that I've found).
And the '73 Tide?
13.5 yards per pass attempt
6.1 yards per rush
They also had a great defense, as all the top teams did back then. It's truly incredible that ND was able to beat them 24-23 in the Sugar Bowl that year.