The following rules appeared on the official M.A.A.A. website for year 2006:

4.16  C/L CLASSIC STUNT  
 
The model must be a pre 1965 design. Proof required (plan, magazine article) 
 
1.  The motor must have an effective muffler. 
2.  Flight time 7 minutes maximum. 
3.  Pattern as follows :- 
 
Each manoeuvre -  points out of 10. 
 
Starting & Departure (within 1 minute)   2 
Take off ................................2 
Horizontal flight........................3 
Inverted Flight..........................4    (entered from bunt) 
Recovery.................................4 
Double wing over (reverse)...............8 
Consecutive inside round loops (3).......3  
Consecutive outside round loops (3)......3  (entered from upright or inverted flight) 
Consecutive Triangular loops (2).........8 
Consecutive horizontal round eights (3)..5 
Consecutive vertical eights (3)..........8 
Consecutive overhead eights (3)..........8 
Four leaf clover........................10 
Landing..................................6