DC2R: J's Racing Header

[TyPaR]

Saw JDMConcept on Ozhonda selling them for a special price. Anybody have any experience with them? Can't really find very much information about them. Any info would be appreciated Thanks

[szymonsta]

i considered these before getting my m-bit's.

j's racing have great reputation for honda tuning and their headers seem a very good price too.
their 4-2-1 design with short-to-medium-length primary's would seem to offer good gains in mid-range in particular, but also top-end would be improved over stock jdm i'm sure. (compare to mugen or m-bit which appear to have longer length primarys for more top-end i think..)
also, from memory j's racing headers use thin wall design for good weight saving, though i dont know if this has any negative effect on longevity of the product?