i have for trail riding and trail ''drag'' riding a +4 mil and 115mm rod, cheetah 421 heads, cool head, 21cc domes, v force3 and toomeys 5, 2X33mm carbs, works great on trail riding and also pretty fast on drags and don't forget the lock up ckutch too never dyno but surely around +80 hp works on 94 and he likes it a lot when i mix half half with race fuel. hope it helps!! pretty reliable