There is nothing hard about making them, just get the right parts and take your time.
I test fitted everything by taping the joins with 2" masking tape, then once you have it mocked up cut a small square out of either side of each join with a scalpel for a tack weld.
Weld it up and 'ta dah!' You have a custom set of headers.
The side pipe part is the easy bit.
I would however probably get your head around what you are doing prior to contracting out your skills
