You could make it work. It would be close on depth but you could always add a spacer ring to help clear it. You will have to run an aftermarket amp regardless. The factory Alpine sub is a triple voice coil and nobody makes those. Using a different sub you will lose one channel of power (around 50 rms) and without that it’s not enough.I was hoping he still had the factory box, that way it could be measured...that pioneer only requires 3 1/8'' for mounting depth. Stuff that plasticy box with some pillow filling and might not sound half bad.
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