K5La instalation

I have all horns mounted on a 2016 Jeep Wrangler. One horn under drivers running board, one under passangers running board, and 3 under the front bumper pointing downward. Should I use a manifold, or just run a main tubing trunk line from tank to driver side, to front, then pasanger side and branch out to each horn off the main trunk line. Will this make some horns blow before others.

I would opt for the manifold central to the horn layout. Split from there then go to each horn individually. If you run via the trunk line horns will sound different but it could be an interesting result as well.