i'm sure this will interest a few people out there on this forum. i've been searching and looking for new headers coming out for our 3.7 v6 mustang and i discovered Mac is working on a set, their website has a spot that says parts coming soon and shorty headers is one of them, included in this is a prochamber, on road and off road, dress up items long tube headers and shorty headers. here is the reply i got when i asked about the shorty headers. We do not have a date on the release of the Short Tube Headers for the V6. Due to the fact that we need to get the vehicle back into the shop to finish up things. We do not own the vehcile, we are using a customers V6 and have to work on the Mustang as he has time to lend it to us. If you have any other questions feel free to let me know. the good news is a company and a reputable one is actually working on a set of shorty headers for the new v6, something a lot of people have wanted. who knows how much if any gains will be had with these headers but for people who want to keep it legal and add some sound and some hp or torque im sure quite a few people will be excited about these being released. i keep checking the site and hoping by next year these are out. anyone feel free to put their 2 sense in.