After ive done my engine change over from TBI to Carb im not sure what to do next. Keep in mind that i use this as a daily driver, im not building a drag car. I want the best bang for my buck just need to know what comes next.

What size exhaust, ive been told 2.5" breaths as good as 3" is that true and what size headers should i be looking for?

Rear end, what can i put in to liven this car up without changing the carrier? I have and Over drive Trans should i stay stock?

Stall I have a stock stall converter, what RPM range should i be looking at?

Trany I have a stock 700r4 in there now should i go to a th350 or is the one i have now good for what im doing.

Any other advice on what i could do to help me out would be greatly welcomed thank you