Does anyone here have access to an original Thrush Muffler catalog dealing from the 60's - 70's with part numbers and original application? I just recently came across a pair of NOS Thrush mufflers in the box with the numbers 5163a. I have the round galvanized Thrush mufflers on my '57 2Dr sedan and love'm. Mellow at idle and cruise but TALK to ya' when you hammer down. The ones I found are a 16" long oval with center inlet and outlet but are not the old Hush Thrush. Same case but are just marked
" Thrush" with the woodpecker logo and blue and white paint. Galvanize is like new. Would appreciate any info on them, thanks.