As someone who quite recently bought a replica Nismo V2 with carbon fibre lip and canards for decent money, take it from me, pay the money for excellent or authentic stuff. If I had to do it again, i'd buy a genuine Nismo and have the lip and canards skinned.
Most traders replica stuff on here is excellent for replicas. The likes of Tarmac/CS will test fit and if its not up to scratch, won't reorder and RT make their own stuff from a mould made from the genuine part. So many parts are made from a replica of a replica of a replica and this is why we get ill fitting parts that need way too much work to make fit.