does not have to be a tunnel or Cat, but yes.  have fun with the boat you have.  Play around with it, tune it and so on.  Just don't waste money upgrading it.  go for a new hull that is designed for speed, then upgrade that as you go.<div>
</div><div>If you buy from Hobby King, read the reviews!  They have allot of junk, but also have a few really good oats as well.</div><div>
</div><div>I bought the Genesis  It is a really great hull, but the motor, ESC, and hardware (well the fasteners) are all junk.  So it was fun to run for the total of 8 minutes stock, really fast, and handled great.  But now it is in replace everything mode.  In the end it will be an awesome boat, but it was allot more then the initial $200.00 (make sure you "add to cart") </div>