Cook the pancetta in a large Dutch oven over medium heat for 3-4 minutes or until browned. Remove from the Dutch oven to a paper towel.
Add butter or olive oil to the Dutch oven. Add the onion and cook, stirring frequently, until soft and tender, about 3-4 minutes.
Add the seasonings and minced garlic, stirring constantly for 1 minute.
Add the crushed tomatoes or the juice from the whole tomatoes. Place the immersion blender into the can and crush the whole tomatoes before adding them to the Dutch oven.
Add half the basil and parsley, then stir. Taste and re-season if needed. Let the sauce simmer covered for 30 minutes. Side Note: If you like a sweeter sauce, add a pinch of white sugar to taste.
Go through your fresh clams; if any of them are open, tap them lightly on the counter, and if they don't close shut, the clams are dead–DON'T EAT THEM.
Scrub the clams lightly in cold water. Refrigerate the clams until right before cooking them.
Cook the pasta in a large pot of well-salted water, according to the package instructions.
Meanwhile, add the fresh clams to the sauce by the handful and simmer for 4-6 minutes. Side Note: Don't dump the bowl of clams into the sauce, as there could be sand on the bottom of the bowl.
Discard any clams that did not open while cooking.
Toss the cooked linguine with the sauce and clams until evenly coated.
Top with the remaining basil and parsley and serve. Enjoy.