For 33V rails use IRFP9140 for P channel, IRF240 for N channel (yes I know one is 100V the other 200). You will need only two pairs, and even that should provide a more robust output stage than the 4 pairs of L-MOS, at a fraction of the price.
You may need to adjust values in the bias generator as VMOS have higher threshold voltages and different thermal characteristics - in particular, if the small BJT is mounted on a heatsink with the VMOS outputs, it will end up overcompensating, which can be solved by replacing the diode with a small resistor (10s of ohms, start low and experiment with increasing the value measuring idle current while heating up the heatsink, eg. with a hairdrier, until you get best stability of the idle current with temperature).
DO NOT use VMOS parts with N at the end for this, so no IRFP240N etc, or low threshold voltage VMOS as there are no reasonable complements for these.
A single pair of IRFP9140 and IRFP240, provided a good heatsink and proper mounting techniques, is good enoug for over 100W output (this will require a 4 ohm load on 33V rails). If only one pair is used, it would be beneficial to use a Vgs multiplier for bias generation instead of a Vbe multiplier, and also use no source resistors on the output MOSFETs.