Does Mace offer the twin throttle manifold for VH with a VT V6 engine?

Unfortunately we no longer manufacture these.  We have found that you can get about 90% of the gains of the twin TB manifold by fitting our manifold/plenum spacers and 69mm TB for about a 1/3rd of the price when you take into consideration that the twin TB manifold requires a custom tune to get it running right..Otherwise try contacting MRC Performance.