I just got the big bore kit no stroker, which i do want, the biggest improvement is in the low end, atributed to the 11:1 compresson JE piston and higher lift cam.

 

These stroker kits like I have from FST are reliable too. And the good part is they are good for about 40hp or so and they have all kinds of torque due to the 75mm stroke. Low end is great, its a blast in the woods with this much torque.