Shorty headers

[PMS]

My son and I lowered his truck. It is a 72 GMC LWB with a HO350 crate engine. The front is lowered 4.5", rear 4". It has long tube headers on it now. In the last 4 months he has banged the headers a couple of times. I remember some posts a while ago about shorty headers for our trucks. I searched but could not find the threads. So finally to my questions. Do they make a shorty, coated header with a ball socket collecter? How much low end torque and horsepower will we lose with the shorty header compared with the long branch header? Part numbers and store names would be great. These will be xmas gift if they exist.

Thanks,
Parrish