I dont know much about air compressors but I have a 1977 Bricklin (had hydrolic doors changed them to air) driven by a pump off of engine pully. (won't keep up). I thought that a small compressor off the battery might be better. Each door weighs about 90 pounds and I do have atank in the rear bumper. I also wonder if the lines might leak, they are old. Is there anyone in Seattle that could take a look at this problem? Thanks Loren