power steering/ac belt

Hey what belts would i use on my da with a b16a motor? I’ve tried the b17 and b18 belt for the p/s pump, when i tension them as much as it can go they’re still too loose and squeal when i have to make a turn from a stop or a tight turn.

what belt would i use for my a/c aswell? I tried the b18 belt and its way to long and the b16 belt is too short.

try from a 94-95 del sol vtec

is that for both the p/s and a/c? or just the a/c?