You can re-sleeve most of them.
how much would it cost to bore out a 12 hp briggs and stratton riding mower motor
5000
6'456 i reckon...
7,899
15000.00
28,000
$2500
Absolutely not!! The cylinder walls won't take that much over bore before you're in to the water jackets.
$250-$350
About7doulars or so
7,899
It cost around $300 to take a motorcycle safety course in Wisconsin.