Cams, push rods, lifters, bearings and gaskets about $700-$800 or so in parts. Double that for stage 3 107cu/in so about $1600-1800 would be a guess on stage 3. It depends a lot though on whether you are doing it or someone else and what components you use. Some go all out and some do it frugally. Labor someone else would have to chime in.
Since you have the tuner, exhaust and air cleaner you should be able to do stage 2 for about a $1,000 parts and labor. Stage 3 about $2,500 or so. The stage 3 kit is about $1,600 and labor is 12-14hrs depending on your dealer.
Good luck
Might be worth a call to Gainesville Harley, which depending on where you're located on the panhandle, may not be too far away. I was talking to a guy at J&P Cycles the other day and he claimed they did a Stage 2 on his trike for $500, including parts & labor. I don't know what he already had on his trike. Of course, he could be exaggerating a bit.
If you already have the tuner pipes and air cleaner and you donthe work yourself reusing the stock lifters and pushrods you couldbget off with cams, bearings and gaskets. That is what i was saying when i said the cost can vary greatly
Just completed a stage 3 last week. Had stage 1 completed. Total cost was $2620 which included 1 hr of dyno tune time. That was winter rates (winter...something we have here in Minnesota, ).