Easiest motor upgrade from a A65

[egp8111]

I'm really enjoying my "new" Cub but I can tell down the road I'd like to have a little more power than the mighty A65 can produce. I'm not looking for super stol performance just enough more to make flying on a hot day less of a challenge . What is the easiest engine swap with the most amount of common parts, mount exhaust etc. to the 65 ? I just want to make a plan and keep my eye out for the right motor to came along.
thanks
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[lycominglou]

 

[huston marlowe]

 

[43-29080]

 

[JimC]

 

[bob turner]

 

[JimC]

 

[lycominglou]

 

[JimC]

 

[bob turner]