Yup yup. Article in a mopar magazine talks about this. The pumps are way overboosted on the V8 cars giving a disconnected feeling. This is way cheaper than using a custom borgeson GM type steering chuck in your mopar. An alternative to machining your own spacers to drop the pump pressure is to get one of the valve assemblies from a slant six car and swap it to your V8 pump. The saginaw pump in a slanty runs a lower pump pressure than the V8 car possibly due to it being lighter by maybe 200 lbs.
Also using C body idler and pitman arms which are a little longer than A body arms and will increase the steering ratio as well. (T/A challenger trick) this sets the centerlink back a little bit more than stock. Possibly a problem with headers, and only goofs up the ackerman angle when the steering is at full lock.