What should i do to this truck

[dixietruck71]

Im new to this forum and was wanting to get advise on what direction to go with my build. the truck is a 71 gmc sierra grande. it was my grandfathers truck and he bought it new. gave it to me for my 14th birthday and i did alot of work to it. now im 30 years old and decided its time to start driving it again, beings it was my highschool ride, it sat for the last 6 years. any how shes all stock for the most part. 350 4 speed 2 wheel stock suspension. all i know is that i want to put all the upper and lower trim back on and lower it but i cant decide how much. mabe a 4-6. any ideas would be great.