I have an is300.
Since the people at the lex forums are not as loving of hand modification and new ideas, I came here.
I love the turbo mani's and everything else shown here.

I have a few questions.
I just bought a xerd header for my lexus, however it came with dump collectors instead of merge collectors. I am hoping to replace the crappy collectors with merge collectors.
If anyone can make them for me it would be great. I am getting a caliper so I can get the exact measure of the 3 primaries.

Is there anything else I can do to improve this header? It is not equal length and I doubt I will be able to achive such a feat.

Thanks