Any of these should do fine for an LF351N replacement . . . .
PIN-FOR-PIN Single Opamp Replacements with Slew Rates & Input Types. . . .
Single Op Amp Equivalents:
CA3140 - Slew = 9V/µs; FET
LF351N - Slew = 13V/µs; FET
LF356 - Slew = 12V/µs; FET
MUSES03 - Slew = 35V/µs; FET (very expensive)
OPA134 - Slew = 20V/µs; FET
OPA602 - Slew = 20V/µs; FET
OPA1641 - Slew = 20V/µs; FET
TL070 - Slew = 18V/µs; FET
TL071 - Slew = 13V/µs; FET