6 cyl a230 ?s

Here you go. 275/60-15 drag radials, 4.10 gears, '71-'74 23 spline transmission with 2.44:1 1st, 1.77:1 2nd, 1.34:1 3rd, Direct 4th.
Here's your 3000 rpm shift graph:
32BAD2FB-4D1D-4810-9469-ED76D4453034.jpeg
And here's your 6500 rpm shift graph:

BE7C9A49-1DEB-4AF9-A058-F7A76DFBD403.jpeg