Brothers Performance - http://www.brothersperformance.com/ - Source for performance parts, prices are high except occasional sale items.
Cartech Systems - http://www.cartech.net/ - Custom turbo kits, custom parts, fabricating.
D & D Performance - http://www.ddperformance.com/ - Source for upgraded manual transmissions and transmission parts.
Late Model Restoration - http://www.latemodelrestoration.com - Great source for Mustang restoration parts.
Mental Addiction Motorsports - http://www.mentaladdictionmotorsports.com/cart/ - AEM dealer with excellent prices.
Powered By Ford - http://www.poweredbyford.com/ - Engine builder and machine shop (they machined my block).
Summit Racing - http://www.summitracing.com/ - Great source for easy and hard to find engine parts, OK prices.
Texas Mustang Parts - http://www.texasmustang.com/ - Great source for Mustang restoration parts.
Tim Takash Racecraft - http://www.takashracecraft.com/ - Great custom chassis builder, custom parts, fabricating, good prices.

5.0 Mustang & Super Fords Magazine - http://www.50mustangandsuperfords.com/ - Online version of the magazine.
All Ford Mustangs - http://www.allfordmustangs.com/ - Reviews on new parts, forums for asking questions.
Corral.net - http://www.corral.net/ - Forums for asking questions.
Mid-Florida Mustang Club (part of MCA) - http://www.midfloridamustangclub.com/ - Local central Florida car club.
Modified Mustangs - http://www.modifiedmustangs.com/ - Online version of the magazine.
Muscle Mustangs & Fast Fords - http://www.musclemustangfastfords.com/ - Online version of the magazine.
Mustang World.com - http://www.mustangworld.com/ - General Mustang information and hangout website.
Perfection Performance - http://www.perfectionperformance.com/ - Local car club with regular meetings, cruise-in, events, car shows.
SVTOA (SVT Owners of America) Central Florida Chapter - http://www.svtoa-centralflorida.com/ - SVT club with regular cruise-in, events.
SVT Performance.com - http://www.svtperformance.com/ - Excellent forum for asking SVT related questions.
Turbo Mustangs.com - http://www.turbomustangs.com/ - Great information source for turbocharging Mustangs, also have forums.

Aeromotive, Inc. - http://www.aeromotiveinc.com/ - Fuel system component manufacturer.
Air Flow Research - http://www.airflowresearch.com/ - Manufacturer of high-flow CNC-ported aluminum cylinder heads.
Cometic - http://www.cometic.com/ - Maker of MLS (Multi-Layer Steel) head gaskets.
Corbeau - http://www.corbeau.com/ - Manufacturer of street and racing seats and harnesses.
Ford Performance Solutions - http://www.f-p-s.com/ - Engine components and builder, machine shop, custom stroker kits.
Ford Racing Parts - http://www.fordracingparts.com - Ford brand manufacturer of Ford performance parts.
Precision Turbo & Engine - http://www.precisionturbo.net/ - Custom turbocharger builders.
QA1 Precision Products - http://www.qa1.net/ - Manufacturer of street and race suspenions.
S.P.E.C. (Spec) - http://www.specclutch.com/ - Maker of lightweight clutches and flywheels.
Trick Flow - http://www.trickflow.com/ - Manufacturer of a wide range of performance parts.