Josh Dobson & Adam Prestney: 2002 Pontiac Grand Am
![Adam Prestney. 2002 Pontiac Grand Am.<br>[Photo by: Ralph Smith]](images/prestney_h.jpg)
![Adam Prestney. 2002 Pontiac Grand Am.<br>[Photo by: Ralph Smith]](images/dobson_c.jpg)
![Josh Dobson & Adam Prestney. 2002 Pontiac Grand Am powered by a twin turbo 509 cubic inch Big M powerplant.<br>[Photo by: Ralph Smith]](images/dobson_c2.jpg)
Josh Dobson and Adam Prestney both started their motor racing careers drifting. The drag racing bug bite however and they started racing Josh's father's (Jeff Dobson) A/TS Camaro. They won Top Street at the IHRA Nationals in 2015. In 2018 they stepped up to Top Doorslammer with a Tommy Mauney built, twin turbo, 2002 Pontiac Grand Am.
| Class | Top Doorslammer |
| Body | 2002 Pontiac Grand Am |
| Engine | 509 cubic inch Big M |
| Supercharger | Twin turbo |
| Fuel Injection | Link computer with Moran injectors |
| Ignition | Link coil per cylinder |
| Data Logger | RPM DL10 |
| Clutch | Triple plate Ram |
| Gearbox | Four speed Lenco |
| Differential | 9 1/2 inch Mark Williams |
| Front Suspension | Lamb struts |
| Rear Suspension | Penske |
| Chassis | Chrome Moly by Tommy Mauney |
| Wheels | Weld |
| Tyres | Hoosier slicks and Mickey Thompson front tyres |
| Brakes | Lamb |
| Paint | Wrapped by Attraction Sign and Design |
| Major Sponsor | Pirtek, Valvoline and Uhlenberg Haulage |
| Best times | 6.630 secs. 210.15 mph |
| Pirtek Taranaki Racing |