Flowmaster Exhaust & Hedman Headers - Six-To-Eight Engine Swap

PARTS LIST
DESCRIPTION	PN	SOURCE	PRICE
MD QuickTime bellhousing	MD-401-6060	Modern Driveline	$375.00
MD 5.0L, 50 oz. flywheel	MD-CS157-50	Modern Driveline	150.00
MD K/O 10.5 clutch	MD-K/S7-101	Modern Driveline	250.00
MD clutch cable kit	MD-6768MC-C	Modern Driveline	259.00
MD clutch lever cable	MD-401-2002	Modern Driveline	43.00
MD Hurst chrome shift lever	MD-504-1040	Modern Driveline	59.00
MD Hurst shift ball, five-speed	MD-504-1050	Modern Driveline	39.00
MD T5 crossmember	MD-6773-CM	Modern Driveline	149.00
MD T5 trans mount	MD-504-1101	Modern Driveline	19.00
MD speedometer cable	MD-506-1020	Modern Driveline	26.00
MD speedometer gear	MD-506-1028-19	Modern Driveline	9.50
MD backup-light harness	MD-700-0001	Modern Driveline	15.00
MD clutch pedal assembly	MD-402-6768M-C	Modern Driveline	135.00
MD pedal pads, trim ring kit	MD-412-6568	Modern Driveline	39.00

Exhaust
On the dyno, our Fox-body refugee made an outstanding 390-plus horsepower using a set of 13/4-inch dyno headers with an open exhaust. We expect to lose a little horsepower when we add a full exhaust system, but the idea was to minimize that loss, which is why we went with a set of coated Hedman 15/8-inch, long-tube primary pipe headers. According to Bruce Couture at Modern Driveline, not all headers will clear his cable clutch linkage, but the Hedmans along with JBA and Doug Thorley headers do fit without difficulty.

The Flowmaster American Thunder 2 1/2-inch exhaust is a complete system with lead-down pipes, an H-pipe, a pair of Super 44 mufflers, and 2 1/2-inch tailpipes that exit under the rear valance.
The Flowmaster American Thunder 2 1/2-inch exhaust is a complete system with lead-down pip
We went with a set of coated Hedman 1 5/8-inch headers for the Mustang that also come with a ball flange on the 3-inch collector to eliminate the need for a flange gasket and one less leak point.
We went with a set of coated Hedman 1 5/8-inch headers for the Mustang that also come with

Backing up these headers is a complete Flowmaster Scavenger 21/2-inch lead-down system, a pair of 21/2-inch Delta Flow mufflers that will connect to a pair of 21/2-inch tailpipes that exit underneath the rear valance. You can also get Flowmaster tailpipes that exit through the rear valance for that OE look.

PARTS LIST
DESCRIPTION	PN	SOURCE	PRICE
Flowmaster 21/2" exhaust kit	17282	Summit Racing	$466.99
Hedman headers, long-tube	88308	Summit Racing	279.95