Ordered a gear vendor, help with deciding gears

23 pounds is from memory.
I'm coming 68 in June......
My GV has been hanging off the 4-speed since about 2002 or 3.
The GV works very well for a streeter with a Commando 4-speed, and splitting. the ratios are
3.09-2.41-1.92-1.50-1.40-1.09-1.00-.78od; GV in red. Obviously some of the ratios are so close as to be either/or ratios. (150/1.40, and 1.09/1.00)
In normal operation I shift
3.09-1.92-1.40-1.09-.78 and the splits are
.78-.73-.78-.72into od. But when I wanna show off;
3.09-2.41-1.92-1.50 and the splits are
.78-.80-.78
With 3.55s top of second-over is over 100mph with 3.55s, and the starter gear is still 10.97 . She has gone 93mph in the Eighth, at 6150 by the math.......... but 7000 on the tach, still spinning the tires, the track official said.
The Wallace Calculator makes this to be 433 hp @3457 pounds raceweight. IMO, my Z-decked 367 is not that strong with just OOTB Eddies and a 230/237/110 [email protected] Scr.. I can only surmise that the GVod used as a splitter, had something to do with it. I can't say and I don't care; it was 23 pounds of stinking-big fun