Need a little help with the rpm vs speed as my V8 may be different than a 6 speed,,307,,and 327 so here is what we need

a 6 speed which is a 3.27
255-35/19 stock 26.0 tires
rpm at 60=======2200 rpm 60mph
rpm at 70
rpm at 80
then we need a limited auto
rpm at 60
rpm at 70
rpm at 80
of course we need a srt 6
27.1 tall-35-19 tires 295
rpm at 60 ==== 307 rear 2000 rpm =61mph ----with 3.27 rear =58mph
rpm at 70
rpm at 80=====307 rear 2500 rpm =79mph----with 3.27 rear = 72mph

and we also need another v8 but with a 3.07

and i will post my v8's rpm