I was just wondering if any of you have heard of this brand of dp and header and if you think it is worth installing. I bought them off ebay

I know that ebay products are not the greatest but they do have a tempting price. I figured that they would at least last untill next summer till i get more money to get brand name parts . If you have any info it would help alot thanks oh and dont be scared to call me an idiot for buing ebay stuff.
DP= ETS (extreme tuning series) this is a 3" catless with bellmouth design
Header/uppipe= KCR
I also bought a 3" apexi n1 cbe & turboxs mbc