Stev-o is correct. A KO with less than OEM 300's will lower the value. Can not say if it will lower it the $1,880 - $2,000 of the cost, but these collectors are getting pretty picky and want the OEM exhaust. Many will pay more just to have the 300's since they are now so hard to find. If you are not going to sell it and can live with 341's just put that on there and watch eBay to buy one at a time. Of course you are really taking a chance buying used exhaust, but might get lucky.