My hood fits perfect thankfully. They are right though aftermarket body pieces often require tweaking and body work for proper fitment.

Try with your CC company if not bring it to a body shop that can work the piece to get it properly fitted. Though not much can be done with a piece that is too small. VG may be your only option if you end up stuck with it

 

seibon fits like garbage i have one siebon product a hood for my Z and it came pre-yellow i will never recommend them for anything.

 

update, i called seibon, they basically said thats the way they fit, thats how the aftermarket is. He went on about how w/ their curing process it shrinks the roof cap, etc.. I told him, if they know that, why wouldnt they purposely make them a lil bit longer to accomodate for the shrinkage? he said they "couldnt" do that.. they couldnt "make" a part that was bigger than the original. Personally I dont think that makes any sense. But after I threatened to just file a claim with my credit card company, he said they would accept the roof back, if i paid for the return shipping and it came back un-damaged.

 

That sucks.
Seibon knows it doesn't fit, but still won't accept their mistake and take the roof back? WTF. I can understand 3mm, but 30mm is a pretty noticeable gap!

I mean... How can you alter carbon fiber roof to make it fit?

If it was an FRP bumper or fender or something...I know you have to trim here and there... but carbon...c'mon!