In the Media


1968 Plymouth Valiant 427 Engine Swap – Project 7.0: Engine Completion and Dyno Testing
Our 427-in small-block makes Viper-sized Power
From the June, 2010 issue of Mopar Muscle

1968 Plymouth Valiant – Track Day Prep
Upgrading our ’68 Valiant to corner like a sports car
From the March, 2012 issue of Mopar Muscle

Mr. Angry’s Happy Place
It’s a cloned Daytona Built to break speed limits.  Got a problem with that?
From the January, 2010 issue of Hemmings Muscle Machines

B-Body Performance Upgrades
2012 Book by Andy Finkbeiner featuring some DoctorDiff products

Project “Deathfish”
1973 Cuda featured in the March, 2011 issue of Spinneri Magazine.

8 3/4″ Rear Axle Narrowing
Tech article from

8 3/4″ Diff Build
Tech article from Beck Kustoms

How to fit BIG tires on a Cuda
Tech article from

Live Coverage from Popular Hot Rodding Magazine’s 2013 Muscle Car of the Year
Popular Hot Rodding Magazines Crowns a King of the Street
2 competitors feature DoctorDiff products

2013 Muscle Car of the Year Summary Article
Fourteen all-around performers go head-to-head in a battle of power, handling, and driving ability.
2 competitors feature DoctorDiff products