[Anthony]

From my understanding, the staggard, i.e. unequal length intake bells, ram tubes, made more power than equal length tubes. I don't understand the physics why.

Numerous companies made mechanical fuel injection intakes for all types of FE heads (MR, HR, TP, SOHC) in the '60's. You can make any of these have unequal length runnners, but for the most part, they came with equal length runners. Some of the manufacturers were Hilborn and Algon. Holman-Moody made some custom FI intakes as well.

Check out my gallary.