This is one of my boxes I've made for my 91 s10. Includes jack dimensions to sit over jack spot, roughly 2. ft3 per chamber, and tuned to about 35hz. I like seeing my speakers. Only thing depending on S10, might have to trim legs. Amplifier, Capacitor, all have room under the box. makes Hiding wires easy..
Enjoy, if you like, leave me a like!
Wood thickness .50
#12 #Ext_Cab #S10 #Sub_Box