3rd and 4th gear set for 930 4 speed gearbox. Porsche 911 turbo

Fits:
Porsche 911 turbo - 1975 to 1989
For 930, 4 speed gearbox

Available with different gear ratios - example - 22:29 (number of teeth on each gear) - 1.32:1 (gear ratio)

22:29 - 1.32:1 
24:30 - 1.25:1 
24:29 - 1.21:1
25:29 - 1.16:1
26:30 - 1.15:1
25:28 - 1.12:1 
26:28 - 1.08:1
26:27 - 1.04:1
26:26 - 1.00:1
27:26 - 0.96:1
28:26 - 0.93:1
28:25 - 0.89:1
29:25 - 0.86:1 
29:24 - 0.83:1
29:23 - 0.79:1
30:23 - 0.77:1
30:22 - 0.73:1
31:22 - 0.71:1
32:21 - 0.66:1
32:20 - 0.63:1
32:19 - 0.59:1 

Diagram ref no 3 and 4