Mike Stormo Posted March 5, 2018 Share Posted March 5, 2018 I have 4 1/2 inch intake air extension made of 304 stainless steel.They are 24" long with a bell on one end to slide over 4 1/2". I could not find one so I had a few made, I will sell a raw ( unpolished ) one for $275 including shipping ( usa only ) or a polished one for $400 including shipping. I can get other sizes made for other models and makes. Quote Link to comment https://www.bigmacktrucks.com/topic/52705-b-model-air-intake-extension/ Share on other sites More sharing options...
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