I just picked up a pristine 95 cobra with a Sportsman blocked 392 and a V2 s trim. Car has never seen rain and very well built. Noticed under boost I am getting white smoke out of the exhaust and a little up from the shifter area. Car runs great and coolant and oil look fine (no smoke any other time) thinking tune could be off a bit as car is breaking up a bit sometimes as well. The previous owner has been mixing racing gas with 93 could that cause the smoke under full throttle? I have a appointment with Pauls High Performance to retune the car. Car has been in a time bubble for 7 years and driven very little (maybe 800 miles a year). Second question is the car has a sumpted custom tank that was done very nicely with a weldon pump about 15 years ago...the tuner suggested that all the lines should be replaced due to age and corrosion concerns?? No leaks or gas oder that i have noticed does redoing this make sense at this point? Thanks for the input.