If someone is trying to help you,it is best not to use words like thats crap,duh things like that.It will not get the help your looking for is what I'm saying.I have been in this hobby more than 20 years and still don't know all the little tricks.Now if you would have said I heard the 3.3 is better than a 2.5 why do you say the 2.5 is better it would have went over better than saying thats crap and duh.I'm only trying to help but when you come with a know it all attitude it only pisses people off so think before you post.A 3.3 is a good engine but requires better knowlege on tuning,if it's a tad off chances are your gonna have a broken con rod.A 3.3 is notorious for broken con rods where you can be off a little more with the 2.5r and not hurt the motor.I have had both in my Jato and prefer the 2.5r cause it holds a better tune and is more reliable than a 3.3 but get what you want.Also top fuel is junk go with trinity or odonnell much better perfoming fuel.