For Sale NOS Y-pipe for 1959 and 1960 Buick Invicta with single exhaust, part # 1188314. $65 plus shipping. Also, pair of NOS mufflers in the Buick boxes, part # 1191514 and 1191515. These are listed for 1959 Buick Electra 225, except convertible. $125 for the pair. I also have some of the NOS exhaust parts listed in earlier posts, for 1964 Lesabre, 1965 Lesabre, 1973 Lesabre and Centurian and many other NOS exhaust parts. For more information E-mail rodell@milwpc.com