Trailer towing hookup questions

Thanks for all the great replys. As many have mentioned I would be better off with a heavier truck. However I have no other use for a truck and it is strickly for towing my car to the drags (if it ever gets finished!) which is about 45 miles from my house. I found this truck and it needed lots of work as it had been sitting for 8 years not running. Ive replaced every brake componet on the truck including heavy duty pads and rotors.
I will only be racing 2 - 3 times a year if that. The route I need to travel will have 2 good size hills which will be about 1/2 mile each. Speed limit on that area of the road is 45 and I am expecting to have to go into 2nd gear since the 5.2 isnt loaded with power!
I like the idea of the adjustable "stinger". As for the ball setup Ive never seen the interchangeable ball that halfafish uses. any idea who sells that?
It looks like I need to load the car on the trailer and head to the local feed mill where they have a scale to get a good idea about weight.
My goal is to get set correctly so that it tows safely. I appreciate every ones help.
Thanks Rod