ok met the mustang today,the track temp was good the weather was right,but not sure about the car changed converter to a turbo action 3800 10" from the tci 4500 10'. now the car runs a bit better on the top end but lost that 1.40 60' that i had .it went to a 1.60 the time was a [email protected] mph.now i'm dissapointed because i miss my 1.40 that would lift the wheels,? would a looser converter help my 60'. now this is a procharged 383 with 10 lbs of boost 29.5" tires and 3.55 rears. what do you think i could do to get that back.the car turns 6200 rpms but not now its down to about 5900 in the trap.ohh and by the way that bad a-- mustang with the 4.7 stroker and 150 shot of dental gas well he now knows what it's like to be run down by a BBD. sorry for the long post .just confused.