Well your first problem is you bolted it to the block. A header or a manifold would be bolted to the head.

On a serious note. Buy a brand name piece. You are paying the extra for correct fitment and quality.

My buddy bought an Ebay turbo kit for his Miata. By time he paid all the extra money for missing things he needed, and to cut & weld everthing that didn't fit right he could have had a nice flying Miata kit.