2 Stroke 1984 cr80 parts

Wanting to build a modernized version of a 1984 cr80. First I need to know where to buy a crankshaft for it. Does anyone know where to buy one or if any of the newer model cr80 cranks will work on it? Also I want to put forks and front brakes off a newer cr80 on it as well. Anyone know how this can be done?
 
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