Mondial/3x8 Antennae

I have no idea if these are any good, but I just bought one, since I've not been able to locate any others for my '87 Mondial Cab (AKA Gina). Hey, it's $74.99 including free shipping, I figured it's worth a shot.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&_trksid=p3907.m29&_trkparms=algo%3DLVI%26its%3DI%26otn%3D2&item=120386915355&category=33639&viewitem=

Anyone have any experience with these guys, this antenna, etc.? There are 8 left as of the time of this post.

Cheers,

Curt