no.
the 4000x was only built for burps. it has no protection circuits at all, a smaller heatsink than a 2000x and not even a gain knob, only a switch between two levels.
i would not use it for daily at all! go with two 2000(X) if it has to be USAmps. and do not run them below specs regarding the impedance. the old strokers dont need much power to get loud, they have a high sensitivity. around 1000watts a stroker will be fine.
they need an amp that has a good control over them. USAmps will be fine, also Zapco and other amps with much control. they do not like digital amps at all.
by the way, box has to be large and ported or give Okis "universalbandpass" a try, nice box for a 15" stroker but rather big.
DiDan