80 Amp at idle Alt-Denso

Need an Alternator with at least 80 amp at idle for the electric fans and other electrical loads that I have and maybe adding EFI in near future. Already have 4g wire from alt to a load center. Alt would need dual pulley because also running A/C. What year and make Denso would work? Has single wire alt now that discharges at anything over 4,000 rpm, but can easily wire a duel field regulator.