74 Duster 11.75 rotors

Will going with drilled and slotted rotors make much of difference over the stock rotors using the stock calipers
None, zero, zip, unless your racing. There designed to stay cooler in the heat of competition. Rush hour traffic does seem like so but it is not nor is having fun with your buddies. Just don’t say, “Hey! Watch this ****!” And you’ll be fine. (LMAO!)