New Owner, Transmission swap

Four gears are nice,
five are better.
8 are too many.
4+1, and splitting gears is the bees knees.

For street use,

with a MOPAR, manual trans, you basically have a 2-gear car, cuz in most cases Second will top out somewhere between
60@ 5100 with 3.55s, to
60@ 5600 with 3.91s, to
60@ 6170 with 4.30s..
But your cruising comfort take the hit with each rear gear increase.

My combo gets me to;
60@ 5100 in Second or
60@ 6400 in First-over with a 3.09 first gear, or to
(60@ 5500 in First-over with a 2.66 first gear) AND
Gear-splitting takes me to 93mph =6160 in Second-over; with
Splits of .78-.80-.78 ...... And
Cruising with 3.55s, goes 65= 2240, which makes me very happy.

My current combo is
Commando A833/GVod/3.55s
Having arrived there by trying every Mopar A833, and nearly every rear gear from 2.76s to 4.88s
I can confidently say that the best combo to use is the one that puts Second gear where you need it to be and toheck with what the other gears are doing, cuz on the street, about 95% of the time, you are gonna be in Second, and if your 340 can't pull it decently, you are gonna get frustrated. AND
Just as importantly, if Second gear tops out at 60=5100, then do not cam it for 60=6160, cuz she'll be over 1000 rpm off the cam!
PM me for more information.