Toyota auris aerial base unit

[Phil100]

Hi guys,

 

So I started noticing my radio wasn't picking up any stations, unbeknown to me the aerial antenna had become bent. On attempting to resolve this issue the inner threaded part of the base unit itself physically came out, therefore even with a new aerial whip, theres nothing to screw into. 

I've looked online and it seems I need part 86300B & 86396 according to the following: 

I've gained access to the base unit internally via the roof lining, but the fixture looks like nothing I've seen online or on some simialr make/model demos on youtube, it seems to be a fixed bolt.

Can I get my aerial based unit replaced or is there a fix? I've seen this fins online that seemingly pop over the top of the base unit but not sure if theses are recommended...
 

 

[eygo]

here is a company that has an auris for breaking

http://www.car-transplants.co.uk/used-parts-breaking-vehicles/#list_top

they will give you a price for the aerial