N14 sidepipe internal baffles

[Wayne M.]

This one on eBay (shot up the exit end, see 4th pic) got me wondering if my NOS GM BB pipes [which I bought 11 years ago, just before inventory was exhausted (pun intended)] were correct. EBay seller claims NOS.

eBay link, but 4th pic below is all you need for this question.

http://www.ebay.com/itm/140709078882?item=140709078882&ru=http://search.ebaymotors.com:80/search/search.dll?GetResult&a10239=-24&a39=-24&alist=a39%2Ca41%2Ca38v1y%2Ca38v2y%2Ca10239%2Ca3801%2Ca85%2Ca10246%2Ca33512%2Ca10241%2Ca10244%2Ca39705%2Ca18&dfsp=1&fpos=T3H3L5&from=R7&frpp=50&fsoo=1&fsop=1&gcs=13&pf_query=140709078882&pfid=2473&sacat=-100&sadis=500&satitle=140709078882&siteid=100&sofindtype=22&sofocus=pf&fvi=1&viewitem=&vxp=mtr

First 3 shots are of mine; baffle holes are much different than eBay seller. Does this represent a different service supplier to GM, over the years ? or a repop ?

I would imagine there'd at least be a difference in sound (since we're hanging up on another characteristic).