Can i transplant body hair to my fue scars in the back of my head and look natural and cover most of the scars?

When the FUE Hair transplant is not well done then it is harder to correct the damage more than FUT Method.
For FUE hair transplant always the patient needs to choose the best surgeon to do it.
For your case, it is better to see some pictures first then we can advice how to correct the scars.

In my opinion you should look into a combination of scalp micropigmentation and FUE .  Consult with a hair specialist.

Thank you for your question. NeoGraft allows patients' natural hair to regrow. Please remove patient and continue to work with your board certified facial plastic surgeon.
Best wishes,

I would not recommend this though it is possible. If money is not an issue it is a possibility but micro pigmentation is your best bet. 

FUE procedure, if done by the new techniques and small punches sholuld not leave any scar. The scar of large punches from past or in case of the patients prone to make hypertrophic scars (rarely reported after FUE), hair could be transplanted into the scars. An alternative option is to implant pigments that we do it with our SMP procedures for any type of scars.

Harvesting follicular units via the FUE (follicular unit excision) technique can be used to remove hair from the chest and transplant to any other area of the body. In your case, you had surgery and now have scars in the donor area. It is definitely possible to harvest body hairs to help camouflage the scars in the back of your head. It is vital to try to match the hair direction when transplanting to the donor area you don't want hairs growing in all directions when they should be directed downwards. It is important to go to a physician with extensive experience with FUE in order to do this type of advanced work.

It is impractical to transplant the FUE scars. The single best approach to this is Scalp Micropigmentation which works well and is far less expensive than another hair transplant, see below