Yes I'm sure that could work. You can make just about any power source bend tube with the right amount of gearing.
Let's try the numbers. The HF 62203 specifications indicate it puts out 2.15hp. That is 1,183ft-lb/second. Based on https://www.youtube.com/watch?v=R2qX4v-eIEw
, it looks like it can turn half a revolution in about 2 seconds, or 0.25rev/sec. Converting this to radians per second, the output runs at 1.57rad/sec. Now divide the power by the speed to get torque: 1,183ft-lb/sec divided by 1.57rad/sec = 753ft-lb. So that tool, if you believe the HF specifications, can deliver roughly 750ft-lb of torque at the output shaft. Now if you want to bend tubing, I've said in the past you need around 5,000ft-lb for 2" capacity. Therefore you would need a gearing system that would deliver a ratio of 5,000/750 = ~7:1. A SBC flywheel is either 153 or 168tooth and the mating starter is 10tooth, so you can get either 15:1 or 17:1 reduction with that combination. That would give you a 2x safety margin and bend tube at about 90degress per 15seconds. I say go for it! I would be interested in whether or not the gearset could handle the torque.