JDM ITR 4-1 is around $350-400 and can be fitted with a skid plate for $40 (no other header can use one without modification)
the comptech 4-2-1 can be had for around $400 and is VERY good
5Zigen 4-2-1 is about $325-350
apexi 4-2-1 is about $450-500
these are all for B series
the comptech 4-2-1 can be had for around $400 and is VERY good
5Zigen 4-2-1 is about $325-350
apexi 4-2-1 is about $450-500
these are all for B series