I upgraded my 470 to a 583. You may need to change carbs& breather box. Exhaust may be diff. Other then that, if both engines are from the same body shaped sled, then every thing else will just both in or plug in. I'd say go for it man, its awesome having a sleeper sled...ahahahah
2006 Firecat F5.. 6" Powermadd riser, snostuff flyscreen, light blackouts.
1993 MXZ 470 w/583 RAVE swapped in