If you plan on tracking the car and installing larger sway bars. Buy the WEVO mounts and have them installed. Eventually the stock mounts even the "improved" versions from Porsche will fail.
WEVO is the best do it right the first time and you won't regret it.
Until then buy a bar with a bend in it.

Anybody that spends any time here knows to buy a WEVO mount when it comes time to replace. :-)

I did spot a used sway bar '87 - '89 at DCAuto.com for $85. Looks like mine and this one are both 21mm. I guessing the lengths are the same. I may go that route for now.

are the Wevo Rear Anti Roll Bar Consoles a bolt or weld install after the old ones are cut out?

Yes. Here's a link that shows the process.

http://forums.pelicanparts.com/porsche-911-technical-forum/221342-another-great-wevo-product-rear-swaybar-mounts.html

sagolfer - thanks good link shows very well how they work