i have an oil furnace that blows hot air through 6 inch ducts(approx 100 deg F) for heating the shop. would blowing through a filter into the booth and having "pressure" blow fumes out the other end be better?? I ask because the blower is there and i do not have an attic fan..
BTW, i love the paint on your S10. how many cars have you painted before tackling your trucks awesome paint job?