Is this engine builder nuts?

Peyote
I think you are missing the point. the 375 hp engine will likely have more usable torque from 2000 up, than the 320 hp might have at 3000.And if you de-cam that 360 to the same 320 hp, it will have gobs more torque than the 320 teener.
That's why I said; torque is what a streeter ought to concentrate on, and let the hp fall where it may.
The 360 is about 13% bigger than a teener. And when built to a similar hp level, will have more than that 13% torque,and will have an especially strong bottom end. That torque at take off, is worth an easy 2 rear gear sizes, and probably closer to 3 sizes, or 1000rpm of stall, or some combination of gear and stall . For the 360 to equal the giddy-up of a teener with 3.73s,it might only need 3.23s, (or 3.55s at most). That is one of the reasons that 3.55s are so popular with street 360s.
But if you already have the 3.73s installed, then I can see the attraction of a pipey teener. But if this;"Once a week drive to work, a cruise on the weekend occasionally and down the strip once or twice ", is your usage,I fail to see spending a lot of coin on it, for just a little giddy-up.
You don't by any chance still have the stock TC in it, with its approximate 1600/1800 stall rpm, do you? If yes, that could be your problem right there.
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It would seem to me that your early-A would be considerably lighter than 3300#. The 70 Swinger340 I had was 3200#; No A/C, but with P/S,P/B, and a 4spd. I think yours might be more likely to weigh 2800ish. I tell you what tho, at 8.5 pounds per horsepower a car, any car, is plenty quick.At 15/1 they're a little doggy and need gears to giddy-up. At 10 to 12 they can still be a ton-O-fun, if well tuned, and well combo'ed .
So that would indicate, say you and your car weigh in at 3000#. Then 300 to 250, is in the ballpark, and would leave you a generous amount of torque to get off the line.If well-tuned, and well combo'ed.
All figures are JMO and your results may vary. Sheesh am I a jerk.