1. what is the minimum weight required for a 1/12th car?

I am setting up my car and the servo saver that came with the kit will not fit a standard servo and it will be expensive to buy a new smaller servo, so it leads me to question #2

2. my car is a RC12L3, I am using a Futaba 9402.
I placed the servo using a Tamiya Alum Servo post on one
side and used double sided tape on the rest of the servo, so it
will stick to the chassis, it is not installed at an angle. I
possitioned it a little forward so the turnbuckles will not be at
an angle, instead straight from the steering knuckles to the
servo. I am using also a Tamiya Servo Saver, the shorter one,
the ball caps are on top instead on the bottom. It looks okay
and when I turn the servo the inside of the front wheels do
not touch the turnbuckes/ballcaps.

My question is: what will be the difference in handling(steering) and performance if I used the smaller servo and installed it in an angle? Will it steer differently from others since my servo and its placement is different? How?

Thanks and sorry for my lenghty question.