8.25 build

Thanks for comments. My goal is to see how far into the 12s I can get with my 273. I know I'm not gonna be able to get a ton of HP and torque out of so little cubes so I'm thinking less weight and powertrain loss is my best bet. I'm also thinking my elevation for my local track should help some as well.(100ft above sea level I believe!) The 8-1/4 is lighter, how much not sure? But it all adds up. I kinda jumped over to building my headers right now so I've had no progress on my 8-1/4. I've got about 4months to get headers,mini tub, and rear end done for some track time.