Re: Which Fastman TB for a 2005 5.7L WK??
Don't know about Fastman but Modern Muscle TB's are CNC'ed units, with dyno results from Hemi specialists. 85 mm and 87 mm are available. the 85 is variable diameter and runs on stock tune, while the larger is straight bore and requires custom tuning for WOT A/F.
2006 GC Overland QD II
5.7 Hemi, Modern Muscle 85 mm CNC ported TB, Apexi super voltage stabilizer, Billet Tech. Catch Can, Koni FSD shocks/struts, SRT8 sway bars, Cooper Discoverer SRX 255/65/17, Amsoil fluids, Diablosport Intune CMR tuned by Hemifever tuning.