In the greater San Francisco Bay area, everything is regulated to an inch of its life, including engine noise that might offend the miles of nearby marshlands and vineyards surrounding the Infineon Raceway (read Sears Point). Griggs' dyno mufflers do the job with straight-through efficiency. AI cars are lightly muffled on the track too, so the arrangement is appropriate.
Bruce really likes the fluid-filled Innovators West harmonic damper (which, naturally enough, the subject engine was the only engine in the shop that didn't have one). Bruce says he's never had a crankshaft or block fail that's had this lightweight, turbine-smooth damper installed. No matter what the aftermarket damper, the bottom portion of the water pump must be lightly clearanced to fit, which is what you're looking at here.
Griggs Racing has its own late-model Front Engine Accessory Drive (FEAD) replacement kit to simplify dressing the myriad of engine combinations that land on its door-step. The company uses Edelbrock's 8840 water pump with slight clearancing on the bottom to clear the harmonic damper, a '94-or-later alternator with a slightly modified bracket, the Innovators West damper, an FRPP AC-delete kit, and underdrive pulleys. All brackets are stock Ford, the belt tensioner is '85-'93 Ford ('94 and later uses the SN-95 tensioner), and the power-steering pulley is a non-Mustang-but-stock-Ford part (probably a truck piece). The system fits all Fox bodies.
Canton's road-race oil pan covers the bottom end. Aside from occasional massaging for fitment, Griggs runs the pan stock. A Melling M68 standard-volume, standard-pressure oil pump is used because the high-volume pump chews up the cam gear and distributor, says Dodge. Besides, with the rpm and bearing clearances in an AI engine, more oiling isn't necessary. If extra coolers, lines, and fittings are on the chassis, then Griggs would use a standard-pressure, high-volume pump.
Not part of the Griggs AI engine package but commonly run by the company is this dual-disc McLeod clutch and flywheel. These are available with race or streetable friction material, so that makes a new trick for the ultrastreet performance and open-track guys to try. The light weight and small diameter really allow the engine to zing, and it all fits inside a stock bellhousing using a stock starter.