115-120 is max doable with stock cam, a good cam can get you upwards of 170-180 with a little head work too. I suggest bo-port, they sell a drop In top end kit, comes with everything but the rockers and head. Cam, lifters, valves, springs, retainers, keepers. And they do high lift without expensive head work. The kit is $750, worth it in my opinion. If you want to spend mine on good parts, that's where I would go. Probably stage 2.5 cam. You would be looking at around 140-160 hp.
Are you planning on injection, or carb?