Didn't mean to sound offensive. As for actual advice on building.
Open up and let me spoon feed you Fatboy.
* Build or buy at least a 421 Cub motor $3,000
* +10 swing arm $ 400
* A-Arms with struts $ 400
* 14 Paddle Extremes $ 400
* Spindle mount front tire set up $ 350
* 38-40mm carbs $350
* Intakes to match $100
* dual feed pingel fuel petcock $80
* Drag style steering stem $150
* JJ&A Drag axle $ 500
* extra add ons not listed $ 1,000
So you're right around $7,000 to build your drag bike.
And if I can be blunt , You will spend this money and get your ass handed to you by a 14 year old / 120lb snot nosed kid.
Take Brett's advice and build a Bracket Bike
Troy