AV44 is single speed rated at 40km/h (25mph) , its a bone rattler as well (no rear suspension)... Side panels you can get fiberglass reproductions from Mopedland in UK £32 pair or singly £16 per side plus shipping.
Is the bike serviceable and roadworthy?
Is the bike running?
Does it have goodly tires (19x2.00 tires)?