No Hassle A-body Headers..... It was done, unbelievable!

Those are not "shorty" headers they are tri Ys
similar concept to the latest 4>2>1 step headers (which do have longer primary tubes)
many step headers are 4>1
If you are running mufflers you might or might not show a difference with long tubes
but if your long tubes are too big you loose big time
also many times the collectors are too big
give me a set of TTIs would be interesting to do a shootout