Hi slowriderz! I need to buy 2 laid back seat posts from you. One is for a 1960's Spaceliner and the other is for a 1960's Firestone Fleet 880. I am guessing I will need 7/8 for both and both will need to be almost 90 degrees. Please let me know if you have other questions, timing and how I can pay you. I look forward to hearing from you, Ryan