I just ran across a letter from the FAA in 1965, comparing the Pesco pump #012023 to other pumps. Is this the pump for the Cruismasters? It gives comparisons to Cessna pumps, Eastern Industries pumps and a Stratopower pump. If the pesco 012023 is from a Cruismaster, this letter might help to use a substitute that the FAA says "compares closely". If someone wants a copy, I will snail mail it to you. Grant.