Top Speed Performance

Harold always goes above and beyond for every customer! He knows his stuff and will never steer you wrong! I’ve been back in Des Moines for three years and he works on ALL of my Mopars wouldn’t take them anywhere else!

I was having trouble finding a good Mopar mechanic in Iowa until I stumbled upon Harold at top speed. He went above and beyond what almost any other shop would have done! The absolute best around! And if you want to add some extra sauce to your scat pack, hellcat or RT he is the place to go!

Harold did an awesome job installing and tuning for the long tube headers and new fuel injectors. I can’t wait for his dyno to arrive and see what gains have been made.

I love Harold's ambition. He has done work for me in the past I never had any complaints. He is currently putting a Ripp supercharger in my Dodge Challenger 3.6. He's very knowledgeable with what he does. highly recommended for any Mopar

First off, if I could give more stars I would. Second, this is the greatest experience I have ever had with a mechanic. I took my wife’s 1989 Chevy Silverado with a blown motor, after several shops said it would be $10,000. Harold did for half the cost and was completed in 3 weeks. He is the best! He always was letting me know what was going on and no surprise costs. He also installs scissor door on autos, so I know what my next project is going to be. Couldn’t be happier with the way the truck is running, only has 30 miles on it so far but everything is perfect. Most importantly my wife is happy!