My truck is the silver reg. cab in this video at 2:32 I won this pull. 2nd place guy was 32ft behind. It runs pretty healthy but im still 15 ft behind the Haisley built trucks in a 2.6 class here. In this video the motor is mostly stock. Stock head, all stock internals, pistons, rods etc... The 24v head will flow the air. Don't get caught up in all of the expensive motor parts because they don't gain much. Your biggest gains will be with a good charger and good fuel delivery. Dialing in your timing and fuel quantity on the dyno is the absolute cheapest horsepower money can buy hands down.
[ame="http://www.youtube.com/watch?v=6XwYGdkxyZ0"]http://www.youtube.com/watch?v=6XwYGdkxyZ0[/ame]