how many 69 verts are there

So my 66 is no were near as rare as 67 to 69 together
Back in 83 when I bought my 69 gt ht
In the days before internet i remember seeing a listing for a 69 383 convert
Thought to my self they never put 383s in darts ....then was looking in the owners manual and saw 383 listed thinking boy did i miss out