408 stroker cam recommendations

I wouldn’t say that I’m new to mopars, I’ve owned my Duster for about 4 years now and I’ve rebuilt all the suspension myself and done a ton of other work to the car. This is my first mopar engine build, I’ve built some Honda 4 bangers in school but not for something I’m going to drive. And I’m 18, I have an old mopar engine building magazine but I’ve gotten a lot of good info on here so anytime I have a question I always go here first to get a few different opinions and ideas.
Wow! Excellent! Well, first of all, welcome aboard.
I would suggest how to hot rod your small block Mopar book for some good reading.

On a 408 engine, small cam (your xe268h) and stock heads, I suggest a static compression ratio of 9.0-1 for a safe and reliable operation. The 650 carb is small. But it will be OK on top considering the small cam and stock heads. Might as well use it since you got it! OR, sell both carbs and roll the money over into a 750.

A custom cam is only a few bucks more at worst. And I really mean only a few bucks. If at all. Asking a cam manufacture for a little more or less lift and/or duration is not a big deal for them. It will take a little time for them to grind the cam and send it to you. So don’t be afraid to ask them. Worst case, you turn them down. And to be honest about your cam, you could go up 10*’s on duration (@.050) and be just fine since the engine at 408 cubic inches can always use some more duration due to its size. It will make crazy amounts of torque.

What trans and rear/gears do you have in the Duster?.