ok so i have about 2 maybe 3 small hairline cracks in my manifold. is this ok to drive for a long distance trip mostly all highway? Also who makes a good manifold? two piece three peice? any info much need asap. about to load the truck up.

 

there are at least 3 different manifolds avalible, most common is ATS, and theres BD and, HTT, for the 3rd gens, you will get a 2 piece, they are all about the same and wont really gain anything over a stock manifold other than "reduced" ability to crack but they do look cool