looks like you are looking for two things
a shift kit (to change the way the transmission shifts)
that would be something like this
B&M 10226 B&M Shift Improver Kits | Summit Racing
then you say you want to change the gas and the transmission (shifter?) to wire
that would be these three things
throttle (gas) cable
Lokar TC-1000HT Lokar Hi-Tech Throttle Cables | Summit Racing
kickdown cable
DODGE Lokar KD-2904HT Lokar Hi-Tech Kickdown Kits | Summit Racing
transmission shifter
Hurst Shifters 3838500 Hurst Pro-Matic Shifters | Summit Racing
now, keep in mind, these are just picks of things that will work, not reccomendations on wich one you should use, just offered as a starting point for you
whichever components you pick, they need to play together (for instance, the shifter (4th item) needs to match the pattern of the shift kit (first item)
and unless you get a FULL MANUAL valve body (thats one of the options of the shift kit) you will NEED a kickdown set up (3rd item i listed) or you will kill the transmission
so, think about what you want, and then get specifics and go from there
