I researched the PClll/sert/V&H fuel pak and the TFI/DFO module,the SERT is the most compelling unit,only,diffecult,the TFI/DFO module seems to be the easiest for the effect vs cost,we used to pay about $150.00 for a jet kit,now they want us to pay upwards of $300.00 for the PClll/SERT/V&H fuel pack ,plus set up,the TFI/DFO module is approx $200.00 and takes a hour to install and a screwdriver to set,now what