Trying to calculate E/T

Good point, I was pretty vague in the description. I think the reason is because the car isn't finished yet but I'll give you all the details I am sure of for now. Here goes nothing...........
It's a 68 Notchback, 440, 8 3/4, haven't decided about a/c yet but it will have power steering. Figure I can just use the old a/c method for a while 85 degrees x 10 mph cross wind x 55mph cruising speed :-D
Here's where the guesstimation gets a little tricky. I know you guys are gonna be angry, but the tranny is a TH400! Well the outside is, the guts are, as Campbell Enterprises put it "bulletproof up to about 1500HP" (We'll see). The engine is in it's finishing stages at CNC motor sports. Now a 514ci with the Dyer's 8-71 setup. Couldn't find the weight for this setup on their website, I'll have to call them. I told Jason at CNC Motor Sports that I wanted 1000HP out of it, with room to build in the future if need be. I am going to be purchasing the RMS Alterktion coil over system which has a weight of approx. 132lbs. Still trying to get the difference between that and stock. Street Lynx rear end kit. As far as tires go, still not sure how tall and wide a tire I'm gonna have to run to hook up.(Any feedback on that issue would be greatly appreciated) This is my largest build I've ever done by about 400HP so I'm taking it a step at a time to ensure everything will be as sturdy and safe as possible. Been about 8 years since I've done any strip racing. Pretty much when I joined the Corps is when it ended, but I do miss the hell out of it! So I'm slowly gonna creep my way back into it and try not to kill myself in the process. Any inputs you guys have out there, I would love to hear them. Any suggestions or changes as well. I've learned you can never know it all so I have a very opened mind when it comes to veteran racers. Hope this info helps a little. Any other questions, I'll be more than happy to answer to the best of my knowledge.