High speed stability issues

I haven't read all the post so forgive me if someone posted this already. If the scoop isn't sealed to the carb you are getting a lot of air under the car and that will lift it. Seal the carb and get a boost in performance and keep the air out from under. Put a spoiler on it also. On the alignment put in 5 degree caster if possible camber 0 and toe about 1/16 in.