I'm surprised the PY guys huys haven't answered yet. They have sold pipes to fit 1st gen firebird convertibles, but I don't know if they sell the tranverse muffler that I think originally came with these cars. There is a lot more discussion in the exhaust tech forums. I think all the ones I saw in the forums had dual 14" mufflers in a normal (non-tranverse) location. I talked to pypes about 2 weeks ago and they were out of but expecting more of their custom spacers to space the convertible floor pan brace down to allow fitting 2.5" pipes inside the driveshaft tunnel.
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