There is nothing wrong with the Eagle 4340 internal balance cranks..... You have to watch out for the hear say info, if you are not going to build the motor yourself, work with a good builder so you can get the combo you need. I suggest figuring out a budget of what you want to spend and go from there, this will really help steer the builder into the combo you can afford.
I also wouldn't suggest a glide, they are not a lot of fun on the street.... You can go C4, Turbo 400 or if you need overdrive AOD.