Yea you need a wheelie bar at least on all of them I've seen. That is another set-up adjustment you'll have to get right. I've seen a lot of fast cars with z bend wire for the front end that worked great. But I like a nice tight front end myself. Here is a pic of the way I did my pro mod steering. Its a little different than the usual way.
I'll be going to SA and Lampassas the next couple of weekends to video and take pics at the drag races here. I'll try and find out some more stuff from Donnie for you. Another thing is mount the servo with velcro and then put a tie around it to cinch it down. That way the vibration won't shake the diodes apart in the servo. The servo's last a lot longer that way.
Griz