Ignoring the nasty weld job, I think it looks alright, yet it would be more professional if you continued the bend in the pipe and got rid of the silicone elbow. get the metal pipe to mate up flush with the throttle body, that would make it a little better quality piece, so what if it cost more, charge people anoth $100 but make it look Euro quality! not a hillbilly hack. keep up the good work.

remember, why would anyone spend $300 on this if they can make the same thing out of $25 in 4" ABS pipe from Home depot. I'ts gotta shine and look good for a car show.