306 / zx dTurbo nozzles and 1.9 gtd nozzles are very similar. The PSA nozzles are designed for 185 bar opening though so may be a bit tighter in spray pattern.
Go for sprinter or merc 300 ones as suggested, I had both of these and they gave a 300rpm idle rise on the 1.9 pug engine. Merc ones seem to be a bit better for top end though, they are probably higher overall flow. merc dnsod265 with 185 opening is the best compromise i have found after using 135bar, 155 bar, sprinter, standard and merc. i use 50% veg though.