My car has manual steering I've looked at the flaming river steering box which is a bit smaller but don't know if it would change the positioning of the coupler..I've not had my 440 put on the dyno or ran it yet but it should be somewhere in the neighborhood of 630HP..I wanted 1 7/8 but TTI didn't make those and went with 2 inch as I didn't want to run the 1 3/4 because my Indy heads have a tall intake runner and didn't want to restrict the engine on the upper end...This engine will probably be shifted at about 6,600 rpm's...Between 1 3/4 and 2 inch on your build depends on how your building your engine..Type of heads?..Cam size?..Intake?..Compression?
