What pipe setup are you running? How much changing to clutching? and do you mind what if I ask what this ran you? Thinking of running this setup in my rev too.
I run the SPI Y,Aaen pipe,SPI can - stock pipe works great, I went Aaen only because a tree reached out and grabbed mine....Aaen was cheaper (bought through BJ) than a stocker at the time.
Clutching is easy, due to the massive grunt of this motor, BJ will set you up for your elevation/riding style.
The BB, if done at time of piston replacement really isn't that bad. I believe I have $2K into it with a billet head......not counting the new crank and case mod (2007 only). BJ has many options available, everything from a stock head (BB cheater head) to wild race gas set-ups. Pick your set-up and hang the flock on!
If you are like me and was going to a billet head any way, along with porting and new pistons......you're not too far away from the BB price.
The best part is the customer service - before/during/after the sale. He has the BEST support and supplies the customer with th set-up (not all builders do this, you are on your own).
He also has some of the best prices on many aftermarket parts!
