Thank you for the post here BIGSTUFF.
We would be happy to help you and your cousin with your tire needs.
We have the Cooper Zeon LTZ available in the 275/60-20 size. Below is the link with our current mail order price. As you may know, shipping and sales tax is FREE to NY. and we guarantee the lowest delivered price on the set. If you can find a competitor with a cheaper delivered price, we'll beat it!
Tire Details - Discount Tire Direct
As far as the 265/65-18 size goes, Cooper does not build their LTZ model in this size. Cooper does build their LTZ in size 285/60-18 which is a little wider when compared to the 265/65-18 tire size. At this time however, we are unable to order this particular size in.
I suggest having your Cousin call us directly at 1.888.459.4080 so we can go over his options.
Thank you for your support here on the boards.