340 cam 1000-5800 rpm... torque converter

well I was told hughes converters are on the tight side, and more in my budget@ 350-375.00 the turbo action appears to be over 500.00 for converter alone, then I need different flex plate and bolts I was told by paul. willing if I can afford I, but not sure if car is going to stick around, but who makes a 340 factory stall, that is tight wound?