I have a 78 bronco In the 12 years I have own the last three if pulling any load or if its above 85 deg i get a vaper lock. Hard line is stock has been clean, new filter, fuel pump I have done nothing diff to it the last two years but if the temp gets in the upper norm vapor lock. I have losen the gas cap.insulated the line that runs in front of the motor no luck but winter or when its cool I can drive it all day is there any kits out there to seal the cab and make a swb pkup out of a 78 Bronco?