I'm trying to determine if there's a way to extend the pedestal my driver side chair sits on. The pipe is 4 inches in diameter. I'd like to get at least 6 more inches of height. I have several options in mind like building up the base or having an extention pipe welded on. I'm leaning more towards having an extention pipe welded on. If you know anyone in the freeport area who does this type of work let me know. I would also like to hear any other options. Thanks