IJ: Yeah I plan on taking the dyno sheets to a very well known and respected place to have them check everything out, just waiting to see if I can get more info from the dyno runs and print outs of every run.
Viper: Already covered

. My only issue is, I have been friends with these people for a while and they had talked about getting me to sign a waiver, but they never actually got around to making one up as they are still new to the whole thing. Not sure which way I will go here. I am happy to compromise with them and cover some of the costs. But they are paying for all of the labor, seems fair to me.
As for getting them to install the new engine, I am pretty sure they are going to take as much care as possible installing the new engine, not that it matters. Because as soon as the new 1jz is in it's home. Taking it to another place to have everything checked over.
New engine arrives tomorrow btw

. Now to start brainstorming big ideas for the other engine, assuming the damage isn't too bad.