[sparkydog]

Next important measurement was in the engine bay. The bay width at approximately the header height - in other words how wide is the bay where the motor has to stuff the headers into?

On the 944 this is 27-28"

Mustang 30-31"

Firebird 30"

Then the distance from CL of front spindles to the firewall. This is my way of thinking about how far back will the motor sit and how much of the Porsche firewall has to go away to clear the bell housing of the motor.

Porsche is 10" & 13.5" (stepped shape as you can see in the previous pics).

Mustang 15"

Firebird 18"

^^ These results are what led me to want to remove the Porsche HVAC unit.