The missing instrument is a G meter. The Blue tack was to hold the small display card for the manoeuvre's at an airshow. The Tiger Club Turbulent's would probably have something similar, as they have limited or no electrics. The rev counter is red lined at about 5,000 as it is a VW Beetle engine. That wire locking surely is a temporary fit as no one could seriously consider that normal as it should go anticlockwise around each bolt head. The Propeller is a Chris Lodge type of at least 10 years old -- i hope it has been stored horizontal otherwise it will not be balanced anymore.