There is no need for any of that. Get an 84.5 or 85" long belt, and reroute it around the crank and water pump so that it makes an "S" shape. Then it will not hit the tensioner and everything still spins the right direction.
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1985 Mustang GT
Edelbrock Performer intake, Edelbrock 600 carb, 9mm FMS wires, 15^ timing, no smog pump, 8.8 w/3.08
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