well i have a 1990 gt 5 spd and i was wondering if anyone ever used one of these i bought one used w/1500 miles on in and im pretty shure i need a boost retard sys. other than than what will i need to get or change anything else my kit is a powerdyne w/ 6 psi and 9 psi pulleys also it comes w/ smog pump delete and i plan to delete the ac will how much hp will i gain is this all safe w/6 psi as a daily driver? and if anyone would have an rough et for 1/4 mile lookin to take it to the track this summer

 

sorry its a powerdyne db11a 9psi kit w/ 6 pisi pulley looking to start w/6