I just put on bbk 1 5/8" shorties on my 93 auto.Noticed a tiny bit of torque loss,and 3000 rpm plus seems the same.For the cost---$160.00 for headers,$60.00 for locking bolts, (mine kept backing out,even lost one) $20.00 for felpro gaskets (paper gaskets melted to flange and blown out within 1...