Your not going to get anymore lift from the G6 than the G5 or G3 there all 1 1/4 " air lift, the same. The difference in the blades is the G5 and G3 are .203 in thickness but the G6 is .250 in thickness making it a lot heavier blade, that's why the commercial guys use them and both 5 and 6 are the same width 3" not 2.5".
The G3 is .203 in thickness and 2.5" in width which also match the spec's of the blades that are already on your mower. Basically if all your interested in is lift then to buy Gator Blades is wasting your money because that's not there purpose. Just buy High Lift blades, there probably cheaper.