I have just collected some of the final parts to put my a35 motor together, I need some assistance finding an intake that will fit on the kit I have , which is the Athena 70cc , with a 21mm carb. For the angle of the motor will make it difficult for the carb to sit right behind the head. I have thought about getting the 20mm intake of of 1977 and having someone custom fab on that one to make one that will fit the port. It seems that I have hit a dead end at this point, but i still have more to read on tuning. Are there any seals or gaskets that I would have to change when upgrading to a kit? If anyone can help drop me a line........