Looking to find and price some collectors with turn down built in. Trying to avoid taking mine and getting then cut and welded on. Just want to purchase some slip on with turn down already on them. Any help on where I may be able to get some.

You might be able to get a set from any of the performance parts outfits, take them to a muffler shop and have them swedge the ends to fit. You will need to come up with something to keep them in place - you don't want them coming off and hitting somebody.