These were made from the early to late 50's in several sizes (.098,.19,.29, & .36) . Early were called Stunt & later ones Super Stunt . I have bought the needles from MECOA that are used on the series 21 engines ,they will work. You need to take the front cover off & place the intake upright ,the way it is now is for running it clockwise. Value is in the 40 to 50 dollar range .
Hope this helps,Max H.