Little over 4k? Lets see...
New S-trim $2300
Heads, including new push rods, studs and roller rockers $1400
Intake $450
Cam $250
Gears with new bearings and install kit $275
Drag radials $325
Injectors $200
MAF meter $175
Throttle Body $250
Fuel pump $125
Axles that wont snap $300
Driveshaft loop because you're running 11's $100
Cage because you're running 11's $275
So we're looking at over 6 grand here WITHOUT labor. By the time you get it all together you will need a few hours of dyno time to make sure the thing isnt going to lean out and explode. Add
suspension and subframe connectors to that price. So, now you have a car that will run 11's until the transmission goes out, now you're spending another $1300. After that your stock short block goes south and costs you another 2 grand.
So... having a RELIABLE car that will make more than one 11 second pass before breaking itself, over $10,000.