Hi to All, I'm new to this forum but not to Chevy 348-409. I've previously owned a true 1961 SS and a 1965 SS w/400 HP 409. Currently, I own a 1961 Impala convertible 348 in need of restoration. I'm considering purchase of another chassis/frame to begin the project but finding interchange info online is difficult. So, my question: does anyone know which years/models GM cars will have the correct frame to fit my 1961 Impala convertible? Or am I limited to only 1961 Impala convertible? All help will be appreciated either with the correct answer or direction to help me find the answer. Thanks! Greg