Arnold was a super nice guy who always was willing to help another pilot / mechanic / builder. He freely interupted his projects to help me fix many of the things that I broke on my Pitts. He was responsible for getting or returning many aircraft to flight status.This is a former Piper COLT.... It was completely refit about 20~ years ago by a VERY FAMOUS BUILDER and founding member of Sun and Fun. ARNOLD R. ALLEN.... Look him up, this plane is actually called out in his Obit!