17x11 not fitting 02 WS6

I jsut came back from the tire shop and they tried to mount the 17x11's but would not fit. The rim itself is hitting this "joint" looking thing on the top. Its not the black sheetmetal looking thing area which looks like it was designed to prevent mud or water from the tires from being splashed up inside.
See on this Link (not my site and I apologise to this person for using this link but I NEED to get this question answered) http://www.ws6.com/wheels.htm
On that link Scroll down to where the description of the photo reads "Here is a stock inner fender well, with the snubber in the stock location..."
In that picture you see the shiny area above the rotor but below the black area? Its hitting there.
I have the AFS 17x11 Rims with the "grandsport" offset.
The tires mounted on there were 315 nitto drag radials. But its not the tire that was hitting, but rather the rim.
Ideas?
Sorry man I am not too sure what that means. Is the fender the black area which prevents the water/mud splashing?
I think the grandsport are 50 something mm offset.
Yes, the GS offset is 50mm while ZR1 was 36mm. Many Firebird guys choose the ZR1 offset to stick them out just a bit farther.
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I'm soon to have 17x11's on 315 in about another couple months. Done my homework and am ready to go
I'm soon to have 17x11's on 315 in about another couple months. Done my homework and am ready to go

Had to bang the fenderwell in a little bit in the fron, thats about it :-) As per NiceTrys reccomendation, i did lift the car by the rear and whamo works like a charm no issues
Had to bang the fenderwell in a little bit in the fron, thats about it :-) As per NiceTrys reccomendation, i did lift the car by the rear and whamo works like a charm no issues 
got em on mine..no problem..t/a mite b different than a z28
1.5" will make it +38mm offset.
If you get something like 1.25" spacer, you'll be good.
Make sure you get them hubcentric.


