I would like to just put it out here that Dr. Diff is the man!
I ordered a Strange 60 through Cass. Unfortunately the gears that I wanted were not available due to national back order. He kept working to find the gears that I wanted. Due to his persistence I now am the proud owner of a strange 60 with 4.30 gears on a spool and 40 spline axles. In the future I will be using Dr. Diff for all of my rear end needs. His customer service is the best you will get anywhere. A very big thank you to Cass.

Digger73 (Mike)

Yes, I can recommend the good doctor as well! Have bought parts and axles from him many times, and never any problems, he KNOWS what he is doing!!!

He's great to deal with and is always willing to help out!!!

Dr. Diff is great!! (even though he needs to clean out his PM box, hint hint...)

good guy, ben dealing with him for years

Once I get settled in I'm gettin a new 8 3/4 pumpkin w/billet caps and adjusters and 35 spline axles.................

Cass,
has always been great . ordered my S60 through him he organised shipping to Australia . no worries . also helped with supply of parts .
I will be back for more parts

Tex

.....and he knows the proper method for setting pinion angle......

Bought my slightly lightened D60 from him with no problems other than some sweat leakage on the axle bearing seals, but he's been on point about helping me out with that.
Great, honest and well informed about his craft and services. Aside from being a gentleman in business.
Highly recommended.

I've contacted him several times and has always answers promptly - I have a order ready just waiting on new sure grips to arrive some day, maybe. It's not his fault it's a vendor issue

I was glad he was honest and said it will be awhile before they arrive

. His customer service is the best!
Purchased from him 3 different times, always great service.

I have bought both brake parts and a 4:30 center section from the good Dr and met and chatted with him a couple of times in Vegas, a nicer guy you will never meet. Is there really anyone else!

He is probably the only one that have positivly supprized me.
A guy thats actually better than expected.

his recommendation of a 15/16 manual master cylinder was spot on for my car. Great pedal "feel". I'll be ditching my 4.30's in my S60 for something a little deeper soon...

There's a BIG box sitting next to my Challenger... and inside it is a recently purchased Strange S60 assembly... which I purchased from "The Doctor".

He has always had time for me when I called him with a question..

agreed. got the dana 60 in the road runner from him, and he's always had time for questions. customer service is the best!

I agree, as well. Ordered my S60 from him, then the driveshaft to spin it. As well as some 8.75 parts before I decided to quit breaking things.

Cass is great.

Cass rules! He is as cool as his name, Cass has class.