i can get 060 emulation with :
[config]
amiga_model = SUPER
chip_memory = 2048
fast_memory = 8192
zorro_iii_memory = 131072
uae_chipset=aga
uae_chipset_compatible=A1200
uae_cpu_speed=max
uae_cpu_type=68040
uae_cpu_model=68060
uae_fpu_model=68060
uae_maprom=0xf0000000
uae_gfxcard_size = 8
....
and all is working perfect !!!