If there was ever a unibody engine bay in the Ford universe that was "designed" to cart around a modular V-8, it would have to be the '71-'73 Mustang and Cougar. That is because Ford had planned to shove the Boss 429 (which measures out at 34 inches long x 30 inches wide) into the car, as well as the mammoth 429 Cobra Jet. The engine would require the Canton front sump pan and pick up. The T-56 six-speed is another story, as it still causes issues in the tunnel.
'71-'73 Mustang and Cougar
Top of shock tower width: 29¾ inches
Bottom of shock tower width: 27½ inches
Framerail width: 30½ inches
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