I remember a quote by the late and great Mr. Tom Hoover.
"everyone should have to build one set of headers.....but no one should have to build more than one"
it can be humbling (that's from me)
I borrowed one of the electric assist power steering set ups that was being removed from a (USAC) Midget race car. I just could not find the room under the dash....too many pedals.
I can only image the squeeze to get everything in there.