First off, excellent post! As far as tooling goes, most people run SRT4 rotating assy and if they buy a rod as an upgrade its a rod made for an srt4 but it also works in the EDZ motor. So I'm guessing you would have a high market base, but thats just a guess. As far as power goes, I want to feel comfortable making 700 whp with these bad boys and not even give a thought as to something breaking, would 1000 be nice....yes, will I ever hit 1000whp probably not. Pistons that are used with these rods are custom made by each seller, I *THINK* MRX uses Arias and Forward Motion uses JE.

http://www.forwardmotioninc.com/html/catalog/page20.html
http://mrxmotors.com/index_files/srt4_race_pistons.htm

As for being made in the US, I would rather keep it in the US, but as long as quality was there may consider outsource. I like to keep jobs in the US and not fund overseas but sometimes its unavoidable... so keep up the good work man! And keep us updated!