HI. guys i'm going to pickup a vintage tecumseh 4hp engine block lots of compression for 30 bucks. hs40 model 55200h serial # 1224b , i need a carburtor , muffler ,gas tank with bracket. I want to put this engine on a Ruttman spyder i'm restoring so i would like to find period correct parts . I don't known where to start how do i find the parts # are they hard to find , would it be cheaper waiting for a complete engine to show up ,i'm new to mini bikes thank you.