Stock bmw LSD rear. People have been mid tens on them already. They are strong lil fuckers and it has a 2.92 gear in it which will be good for the 3 speed.
Got a good deal on mine as well. Actually they were cheaper then all the rest of them and they are including a bell housing at no charge, spec'ed out my converter for me and got me a flex plate as well.
It is a RPM built C4 reverse pattern manual valve. It should hold well more then what I am planning on making. Also the fuel system is a A1000 pump with a -8an feed with a -6an return with removal of the stock tank and a install of a 12 gal fuel cell in the truck.
You should take it to one of the NDACUTS racing events. I am sure they would love it even though they only race 1/8th mile. I know you car prolly really picks up on the big end.
I need it so I dont have to take so many people on my boat all the time. Why does it seem like I am the only friend people know that has a boat. 30 people call every weekend to see if I am taking mine out. So now I will have another for them to ride one.