I just moved my car from the Midwest at 700 feet above sea level to SW Colorado at 7,000 feet. I have a Demon carb with 83 primaries and 91 secondary jets. I know I will need to lean it out but does anyone have a suggestion about how many steps down would be a good starting place?

Thanks for any help or suggestions.

'64 Sport Fury, 528 Hemi, FiTech EFI, 4-speed, 4.10 Dana 60
'57 Belvedere 2dr sedan, current project in process
'19 Cherokee Trail Hawk Elite
'03 Ram 2500 CTD HO, 6-speed 214,000 miles and still going strong