IF you don't want too loud, DO NOT get 2 chamber Flowmasters + off road h-pipe (but if you do want mean, throaty and loud, get them-- awesome). Get the 3 chamber Flowmasters with Delta Flow Technology. If installed with stock Mustang h-pipe (with the 4 cats), I think they'd be EXACTLY what you'd want. Seriously consider those.
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351W-powered 1979 Ford Mustang notchback
Stock 5.8L under custom made 4" cowl, C4 w/ shift kit
Holley 750 cfm, Edelbrock Performer RPM intake
1 5/8" MAC shorty headers, Al driveshaft
2.5" Off road H-pipe, 2-chamber Flowmasters
Front: 225/60/15, Rear: 255/60/15 Eagle GT II
Weld wheels (15x6;15x8), 8.8" Rear w/ 3.55s
14 x 4” K&N air filter.
Only a couple of weeks b4 Project FOX begins!!! 
"Red, thou art my companion. Hasten now your quickened metamorphosis to Green that I may conquer all who dare abide there beside me. May they be left thither behind burnt black." ---Fox Body
[This message has been edited by Fox Body (edited 09-10-2001).]