Before I make a mistake please help new mopar fan!!

383 is listed at only 60 lbs heavier than a 360. spark plugs are actually pretty easy to change, takes me 1/2 hr on my 431 with tti headers. bellhousing bolts are easier to acces than a small block. you can fit manual or power steering depending on the headers. headers dont trap the steering like most sb headers. ground clearance is not an issue. no doubt you can make a lot of power with either setup, but you can make insane power with even a 5.0 fox body mustang, which is a lighter and much weaker unibody, and they still work just fine.