I searched and found nothing and did found a few threads about GSR Skunk2 Pro IM and Hondata IM gasket which will require you to get longer IM studs.

So a buddy from another forum told me to get 8x35mm(Honda part#: 92900-08035-1B) which are suppose to be longer; since, the original studs on the JDM GSR head are 8x25mm.

My question is, will the stock original 8x1.25mm nuts work with the extended studs(8x35mm)? I'm thinking it should since both are 8mm in diameter. But just not sure cause I don't know the thread pitch on the IM nuts from the GSR head.

 

Ive read about using throttle body studs (which may be the part number you listed) if i remember correctly they used the hondata with an OEM gasket on either side.

 

I made my own cometic intake gasket out of a sheet of 1/8" PTFE and just smeared a very thin layer of RTV on either side. It will deform slightly on it's own, but added the RTV as extra insurance. Stock studs worked with my USDM head and eBay "ITR" intake.