MY friend has a 99 durango- We have ordered a set of shorty headers (claim 35hp and 42ft. lbs MY ***) an MSD 6A, and MSD spark plug wires- and will get a 3" cat-back on it later-

FIRST- How hard is it to install headers (also estimated time)

SECOND- HOW hard is it to install the MSD 6A (we already have the dodge harness, and tach adapter)

 

your answer depends on two questions.

1. do you have the tools
2. do you have the ability, skill, and beer.

with the right tools, a cold beer, and the proper skill, I would say 3 to 4 hours.
now you have to factor in, talking BS with the friend, a refill on the cold beer or two.

with the wrong tools, limited skill, a cold 12 pack, and a friend just around to help kill the 12 pack, I would say a weekend job with several trips for the right tools and more cold beer.

 

for just headers- or for the msd box?

 

my shorty headers took less then an hour to do.