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Old 08-15-2017, 10:57 AM
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Default 303 Silent Thunder Box

I found a 303 with carbed 454 mags I kinda like. However, it does NOT have the original silent thunder box. The straight pipe sound won't work for me. In order to pursue this boat deal any further, I need some more info on how
hard it will be to find and re-install the original ST box. Can anyone help me out with this? Also, will the box from a 336 or 382 fit the 303 and vice versa?
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Old 08-15-2017, 11:44 AM
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Just add mufflers or go with baffled tips. People pull those f'ing POS's off for a reason. You can't give them away. Most are cut up and burned.
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Old 08-15-2017, 01:56 PM
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I read this everywhere. But why? What is wrong with them? To me they look much better than a pipe swim platform and they continue the styling of the boat. I have found mine very handy for keeping coolers on and getting on and off the boat.
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Old 08-15-2017, 02:11 PM
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The box on a 303 is not also the swim platform like on the older Formulas. It bolts on the underside of the built in swim platform. They rattle and sound like crap. Much cleaner setup with the box removed. One of the first mods my buddy did with his '96 303.
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Old 08-15-2017, 07:49 PM
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Originally Posted by Knot 4 Me
Just add mufflers or go with baffled tips. People pull those f'ing POS's off for a reason. You can't give them away. Most are cut up and burned.
How much quieter are the muffled tips/baffles compared to the box?

Originally Posted by Redneckcustoms13
I read this everywhere. But why? What is wrong with them? To me they look much better than a pipe swim platform and they continue the styling of the boat. I have found mine very handy for keeping coolers on and getting on and off the boat.
I totally agree. On any of the SR-1 Formulas, I hate the pipe platforms too.
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Old 08-16-2017, 07:34 AM
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Corsa baffled tips are pretty tame. Mufflers can be as quiet or loud as you want depending on what you go with. You can find take off baffled tips cheap occasionally online.
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Old 08-16-2017, 09:34 PM
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The silent thunder on my 303 rattles and it drives me NUTS.
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Old 08-17-2017, 01:13 PM
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I appreciate all the replies. But the original question still stands. Are the under platform boxes interchangeable between SR and Fastech models?
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Old 08-17-2017, 02:24 PM
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Originally Posted by boats74
The silent thunder on my 303 rattles and it drives me NUTS.
Let's take it off!!!
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Old 08-23-2017, 12:17 PM
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Default Silent thunder

I have the silent thunder box from my 303 some where. Nine 7three296112nine
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