Question about mounting 300X on 3120

[Deere Man]

All,
I bought a 300X loader yesterday to mount on my 3120. My tractor already had the hood guard installed so I wasn't going to need it. The unit the dealer had had the older hood guard with it (they are sending that back for a credit) like was on my 4200 I used to have. The dealer told me not to worry that they were all the same ecept the hood guard. When I look at deere's website it shows different mounting brackets between the 4200 and the 3120, the dealer insists that I am wrong. I am concerned because they knocked another $200 off it I installed the loader myself and told me it would only take a couple of hours. Anyone know what I'm about to get into?
Thanks

 

[kennyd]

My only suggestion is to log into JD PARTS, and look up the loader to figure out what mounting brackets you need...

For $200 I think I would have let them install it though.

 

[Deere Man]

I got the loader put on last night. If I could make $200 bucks every day doing that I'd have it licked. It only took roughly 90 minutes and was very easy. I'm glad I saved the money.