There is one F/S locally by me. Nevery heard of the company but they are out of NJ. Says to be rated for 750hp. Anyone have experience with them by chance? http://www.levelten.com/Level_10_PTS...m1800-7000.htm

 

I would want to see a list of upgrades. If you are running 750HP you will want things like a billet output shaft, Sonnax input drum and other premium parts that can quickly raise the price. IIRC FLT's Level 7 has these parts and costs $4000+. At that power level a 4L80E is often cheaper and even more durable.
Lots of shops build what I would consider a "basic" trans and claim 750HP which is BS. Not saying that is the case here.