The 4180 from what I read is a great carb and not much different from the non-emissions carbs. Just make sure you get the correct rebuild kit as there are some changes like a two-stage powervalve. You wan the holley 3-1346 kit.

As for shorties, I don't think you're going to find anything specific. Sanderson has some shorty headers for older trucks that will likely work but you'll be adapting the lower pipes to work.