I tossed a set of Edelbrock Tubular Exhaust System (TES) headers/Y-pipe on my '88 nearly 20 years ago.
'Course, Edelbrock discontinued them a decade ago. The headers and Y-pipe are very durable stainless steel--if you can find a used set, you'd be in great shape. Mine are p/n 6667 with AIR injection fittings.
The flanges that bolt the Y-pipe to the headers are mild steel, so they rust away to nothing. They're replaceable.
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Oooops. Sorry. Just noticed that Edelbrock didn't have fitment for '94-'95, and '93 in the 2500 series only.
http://hbassociates.us/K1500_TES_Instructions.pdf
Beyond that, there's other companies selling similar shorty headers.