The apexi avc-r can be had for as low as $350 shipped, but I've still got an idea that'd be as good/better.... for less


Now, there is this from NZ.
Independent Electronic Boost Controller

Hand Controller for Digital Adjusters


2005 Ford F150 SuperCab FX4 1964 Chevrolet Impala SS 1998 CSVT: 354HP/328TQ @ 10 psi, now gone