Hey Dan. I just finished a 408 for my Aspen and what i have is a '73 360 block .030 over and i purchased a Scat Kit with forged crank,forged I beam rods,forged KB744 pistons,and the kit came with clevite bearings and sealed power rings for $1900.00 plus tax.I did some home porting clean up on my Eddys and running a crane cam 258/268 dur.@ .050 560/580 lift.Crane rockers and my air gap with 750hp carb,and i installed a Milodon oil pan and pick up.I'll most likely have to change my headers as i still have TTI step ups but i'll see how it runs first.