A really neat setup is the POB switch pitch Turbo 400. I used to race with one, had a switch to change stall speeds. High side was 2400 or little more, low side was about 1800. GM used them in the big heavy cars with low rear axle ratios. They went to the high stall at idle and used the extra rpm to get the cars rolling, once up to speed, the converter would switch. Passing gear would drop a gear and switch the converter for extra power. My race car ran 2 mph faster then with my custom made expensive converter due to the low stall speed!
If my 250 inline six had enough power to spin a turbo 400, I would put one in.
