I was doing some gear ratio calculations for my upcoming swap. Aerodynamics aside, the theoretical top speed of the 6.2L Camaro engine and trans with 33" tires is 176 mph if you keep the 1.41 high range. If you switch to 1.22, it's 204. :rofl
Seriously though, I built a spreadsheet to figure out final drive ratios and whatnot. My Camaro donor vehicle has a first gear overall ratio of 13:1. 1.22 high range gives a 1st gear ratio of 17:1, 1.41 high range is 20:1 in 1st.
Factoring in the 33's in 6th gear, 1.41 high range should turn about 2000 rpm @ 60 mph, and 2600 @ 75. 1.22 high range turns 2000 rpm @ 68, with 2200 @ 75. By contrast, the camaro is 2000 rpm @ 70...pretty darn close to the 1.22/33" combo (3.54 stock diff gears). It's even closer for 35's.
I'll probably stick with the 1.41 simply because I'm in CO. Lacking O2, and climbing big hills takes more rpm. Plus, the camaro is tuned for premium, a new tune for mid-grade will drop the power and torque a little. For you flat-landers though, you might consider switching to the 1.22 for better cruising.
Low range 1st gear crawl ratio is 42.26:1. By comparison, my crawler running a LQ4 6.0L, TH400, 3.4 Atlas, 5.13 gears and 42" tires is 43.26:1 and does just fine.