Case model 1818 loader repower question
 

I made a deal for a 1818 case skid steer . It has a Onan 18 hp engine on it that is smoking bad and not running well at all . Price was right .
What I would like to know is can I get the power needed from a kohler k301 engine ?
And at what cost to gain the needed hp ?

http://www.colemanequip.com/SpecSheets/1818.pdf


TIA