Hi, I will be painting my 92 Ram w150. I am wondering if anyone knows how much paint I will need (primer,base,clear) to get full coverage with a few coats (clear being about 3-4 coats) I do not plan on painting the bed at all as I will be doing a spray liner. I was thinking maybe a gallon of each except maybe a little more clear. Anyone who has painted their ram before please let me know what you think