Thank you for visiting Troy Ermish Inc.  
Business Hours:
Mon-Thurs 9am-5pm pst (Closed from 1-2pm for lunch)
WE HAVE MOVED OUR SHOP LOCATION! PLEASE CALL OR EMAIL FOR OUR NEW ADDRESS

Troy Ermish Inc. is the premier Datsun 510 parts supplier located in the sunny central valley of California. We specialize in Datsun 510 restoration for street and race cars, custom engine , transmission, brake and suspension packages, full service transport and track support, chassis and engine dyno, complete custom scale / set up service for every Datsun 510 enthusiast. With over 35 years of expertise, our team provides top-quality restoration and performance upgrades to keep your classic Datsun 510 competitive and running at its best. Send us a DM or call the shop today for more information. 
 

The Hoosier Tire 2.5 Challenge is the West Coast’s premier vintage racing series for historic B-Sedan cars, celebrating the golden era of Trans Am–inspired competition. Featuring iconic sedans like the Datsun 510, BMW 2002, and Alfa Romeo, the series brings together passionate drivers and enthusiasts to race door-to-door under a 2.5-liter displacement limit. Run alongside major SVRA SpeedTour, SCCA, VARA and CSRG vintage racing events at legendary tracks such as Sonoma Raceway and Laguna Seca. The 2.5 Challenge offers exciting, competitive, and period-correct racing on a level playing field thanks to spec Hoosier tires and vintage-style rules. More than just racing, it’s a close-knit community of drivers who value camaraderie, authenticity, and keeping the spirit of classic B-Sedan competition alive. Whether you’re a seasoned racer or looking to join with your own vintage sedan, the Hoosier Tire 2.5 Challenge is the place to experience true grassroots motorsport history in action. If you are interested in becoming a member, please contact Troy or Ashley and we can get you signed up. See you at the track! 

2026 HOOSIER TIRE 2.5 CHALLENGE SERIES EVENTS 

  • 3/27-29th THUNDERHILL RACEWAY
  • 4/23-26TH SONOMA RACEWAY
  • 6/12-14 LAGUNA SECA RACEWAY
  • 7/3-5TH PACIFIC RACEWAY
  • 9/18-20 BUTTONWILL RACEWAY
  • 10/2-4TH LAGUNA SECA RACEWAY 
  • 10/9-11 SONOMA RACEWAY

Please keep an eye out on our social media for updates to the event schedules.
@datsun510queen

@tabs2.5challenge
 

Ermish Flips his fortunes to win GT3.

The final Hagerty Race Day at the 58th SCCA National Championship Runoffs began early this morning with the GT-3 race on Indianapolis Motor Speedway’s (IMS) 15-turn, 2.592-mile road course. Under overcast skies, Tire Rack Pole Award winner Troy Ermish of Tracy, California, led the field to the start and was promptly shuffled back behind several competitors.

As the cars reached their braking and downshift point into Turn 1, the low-light conditions created a brilliant scene as fire shot from exhaust pipes on several cars. It was Michael Lewis of Poway, California, who entered and exited Turn 1 with the lead on the opening lap.

After the brief setback, Ermish’s No. 38 Rebello Racing Engines/Goodyear Nissan 350Z was soon tucked right up under Lewis’ No. 32 Goodyear Mazda RX-7 for the opening two laps. Going into Turn 1 to begin lap three, however, Ermish moved by Lewis and continued to build a lead of more than 10 seconds at one point during the race. Unchallenged for the remainder of the 19-lap event, Ermish claimed his second National Championship in seven Runoffs starts.