Can I get the opt load of a LDMOS ,Only with a s2p file?

Hello guys, Can I get the opt load of a LDMOS, Only with a s2p?
I have a new RF PA design, the RF LD MOS manufacturer only offer the s parameter, dont have a nonlinear model. so can i get the opt load for max power out? and how to do?

thanks for your input.

No, you can't obtain optium load using simulation without non-linear model because S2P has only linear parameters information only.