2nd try? On the cheap friendly comp?

Please enlighten me to how it makes a big block in an A body easier with headers.

I installed a B series engine in a '71 Duster without much can fair at all.
It is a 400/727 combo that slide right in with standard B body headers (Hedman Elite's) as per BBD.com and Schmaucher mounts and torque strap. Lokar cables move the throttle and trans kick down. A MP deep trans pan is also on the trans.

No fitment issues on the outside! Tight? Yes. Easy? I thought so. A buddy and I wacked it out in under an hours time.

How does the internal mod help a B 727 in a tight car?