Quick engine position question

Measure from the hump to the door siles on both sides. When I installed a 8.8 in a 66 Barracuda, I used 2 short Explorer 31 spline axles. The clearances came out great for the tires but not so well on the 2.5 TTI tailpipes over the 3.25 axle tubes. They can work, just very close. It MIGHT not have been needed to narrow the housing but this car used regular backspacing on the wheels 15x7 Anson slotted rims. The 8.8 parts are so much cheaper to buy then a 8.75 or Dana. Summit sales a Ford Racing carrier for 255 unlike a Eaton for a 8.75 at 516 or Auburn for 485.