Yes, it possible to buy the windshield only for shorter microphones. The windshield comes supplied with the black rubber filler strip that would need to be swapped over on your Modular suspension.
The details of each windshield are below:
Description:Windshield WS 1
Web link: www.rycote.com/products/010601
Description:Windshield WS 2
Web link: www.rycote.com/products/010602