yank is ok unless yur planning on some power later on..they wont handle it
I have also been told by tranny guys who have taken a Yank apart that they are a stock GM converter with a new Stator..that was the only difference.
personally I would never run another one.
I run a TCS (out of Arizona) and love it. I would not run anything else.
Others have had a lot of luck with PI and Circle D..I have can not speak about those because i have never ran them.
i also am running a TCS (The Converter Shop) theres are a billet converter that they custom build for your setup and they also use a faster stator then yank uses which means easier stalling.
Junkyard 5.3 milled heads 200 shot, built 4l80e with circle D 4000 multi disc converter
EPS cam 23x/23x 600/603 112lsa
KP 6 link bagged with Accuair E-Level http://www.nitrousexpress.com/