These 27 / 29cc engines, longblocks, top ends, and headkits have proved extremely popular, and offer great bang for the buck.
Wherever you may purchase them from, know that you have many options, in both 27 and 29cc versions, to fit your individual needs and budget:
Complete engines:
http://www.davesmotors.com/store/product929.html
Headkit engines:
http://www.davesmotors.com/store/product992.html
Longblocks:
http://www.davesmotors.com/store/product1413.html
Headkit longblocks:
http://www.davesmotors.com/store/product1415.html
top ends:
http://www.davesmotors.com/store/product701.html
headkits:
http://www.davesmotors.com/store/product993.html