the jcca A12/ 1303cc engines produces between 170-180hp i think and rpm set at about 9000 to have some margin, but i think they can easily rev to 10k, im friend with 2 that races these beauties in the jcca cups in Japan this blue one and the more known Hirota Tomei sunny :-) it was said to also have a estimated topspeed of 250kmh that is quite a feat for a 50 year old pushrods :-) Sincerely