Looking for some replacement Power MOSFETs for a little amp. The originals are FX30KMJ-3 and FS30KMJ-3. I was loking at some replacements but I couldn't find any P-channel ones that could go up to -30V drain current. Would the be a problem? Wondered if anyone had some better ideas for replacements. The Rail voltage is 50VDC Best I could come up with was IRF6215PbF for the P channel.