Side Pipe builder's ?

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The ceramic coating on my pipes are basically done for and will not polish out anymore. My cobra is a Lone Star, and were not sprayed well new and the welding,.....sucked. I'm thinking about increasing the size of the pipe for more flow. I'll be honest, I have no idea how the mufflers are welded in, screwed in ect. I'm a side pipe virgin.

Here's some questions.

Are there any builders that you would recommend ?

I am capable of welding these myself so, is there a parts list from any company ?

Is stainless really a better choice, even though the price is very high ?

Is there any information and testing results, regarding different sizing of the muffler section ?

I believe the glass pack is all but blown out, but actually, I like the loud grunt sound. I don't have any idea, just how much of the packing is left until I cut them apart.

What mufflers are suited for side pipes ?

Is there any that are tunable, like the "Super Trap" that are easy to tune in a side pipe ?

Does anyone have a building book, diagram, instruction sheet ect.

If using steel, can you rust coat them inside before putting in the muffler ?

As loud as mine are, and not knowing how much of the glass pack is left, it's actually pretty soft at highway speeds, there's more wind noise than muffler.

I want a radical sound (very important) high quality muffler and long life.

I've see someone's beautiful pipes here on CC, that the cost was over 3k. I really don't want to spend that much but, you get what you pay for in life.

Any advise, opinion's, links and product names/part numbers, will be appreciated.

Thanks,