Turns out that Lido plastics was aquired by Tejas Platics, who doesn't appear to have any product (at least not on the web).

http://www.tejasplastics.com/

HUMMER .25: No need to compensate.

1989 Dodge Raider: 3.0/5
1992 Chrysler LeBaron Convertible: 3.0/A
1994 GMC Safari: 4.3/A