My kitchen sink was leaking and the p-trap is the "old style" that is no longer
Sold at Lowe's or Home Depot. Where can I buy the old style? The new one
Does not thread right.

Hi SherryMack

You can try a local plumbing supply wholesaler/distributer and see if they have the part available. As these guys specialize in these products they can tell you all options available to you... ;)

Good luck!

Mark