Back in the day, the 4-2-1 was known as the torquier of the two designs of long tube headers. The 4 into 1 was known for making more peak hp.
The 4-2-1 sometimes fit a little better because they have fewer tubes and take up less space in the congested area.

For these reason I'm suggesting the Schumacher.

Dyno testing shows that headers increase the torque curve below the torque peak. Shorty headers don't do much more than HP manifolds, if any.

R.