ok so i have found everything for this presses. block off plate 5/8 bolt for lower intake, and the block off plates for the heads even the smog pump pulley replacement. now the choral canister with the 2 vacuum lines that has nothing but the vac lines attached can it stay instead of plugging the line and just use that as a plug ? i also herded some one saying there's a pipe or line going to the gas tank? mines a duel take does that apply cuss i don't see any lines running to it from my emissions. and the last question i have and very important from some people that have done it with the 5.0l whats the result with gas mileage? i herd people with the 5.8l doing it getting 18 mpg if i can get just that hell ya worth the 80 dollers for the block off plates and everthing