Rack and Pinion vs engine setback for header clearance?
Here's some pics of my exhaust options and how they fit or don't fit around the steering box. In some I laid the header/manifold about where it comes close to clearing the box. Some others show how the exhaust(s) fits around the block.
This was just to get a visualization of how far back the motor would have to go, if I chose that route.
As you can see, the 4tube headers would at least touch where the firewall is now, so add some for the block and its on the order of a 4-5 inch setback, not an insignificant amount to move a firewall and tunnel. Its not as bad with the iron manifolds but still needs setback of some sort. Because of the angle of the front pipe of the headers when viewed sideways, raising the motor up will aid in clearing the box. But there's a limit.
Of course I have the rear mounted distributor to deal with too, don't want to bury that. Setback can only help a front heavy weight distribution. How bad do I want to use the headers?
At some point I'll crawl under the car and see how a rack might fit.
*continues to scratch head*