i checked all the old post that i could find some did answer my questions. i going to buy a rebluid engine and start from there. my car came with the 4100 engine can i use the same tranny it came with for the 350 if not what tranny is the easiest or best to blot up i don't plan on driving the car much but on and off the trailer and a block or so? also i read that some people have a problem with the gas tank getting pressurized what is the solution for this? what other problems do you run in to? what is the hardest thing to do out of the whole job?