Corvette restrictor size & power?

[knighty]

Can someone tell me what restrictor sizes the Pratt & Miller run corvettes use......I can see that they use two (1 per bank) from the under hood picture that I have - but I havent a clue which size they use - I'm lead to believe its a 7 litre engine - known as the LS7....... I know they have/had the edge over the astons due to 6% bigger restrictors allowed for the 2-valve engines........last I heard was this 6% 2-valve rule was being dumped and the corvettes now have lost the 6% restrictor advantage?......is this correct?

also does anyone know what sort of power the katech built motors are producing in the corvettes?......I'm sure this must be common knowledge in the US grape-vine