when i first started my rebuild i bought the 4 pintle #19 mustang injectors, i was going to supercharge with fmu, now im going to be running a turbocharger instead so i will need #42 and a custom tune these injectors where installed but never run i paid $207 for all 4 i would like to get $100 plus shipping willing to take offers , these are not rebuilds, these are brand new,