Super Dynamics 4-1 header

[Jusjazz]

Was wondering anyone has the similar header fitted onto their car, & hows the result?? Been reading posts regards that those poorly made replica headers will gives more problems than good due to workmanship. BTW, i`m a jazz owner and on manual, just wanted to give my ride a bit more ommph with my Mugen/Apexi intake mods. Many thanks.