wiseco are i think 380P code for the TM,
i have some wiseco here, not sure on P4 but i would have a P6 for sure, im thinking they come in ps,20,40,60,80 (70,70.50,71.00,71.50,72mm )
i also have some stock Suzuki piston but i dotn under stanf the coding. (actual i cant get my head around any of suzuki codes)