spent a weekend redoing mine

dash out , strip

remove all the raised bits with a stanley knife and filled it with body filler
i made up ally blanking plates for the vents
i then used accoustic carpeting as used on speaker boxes and contact glue and a shit load of patience to get it smooth - can be done
i removed the radio and ashtray in he centre console and made up a plate to blank this whole lot off - now have plenty of space for gauges and management as well as a fuse box and a solenoid 2 stage boost control