I got it done for $2500 with what you have, BUT, my heads were already done and just needed a good cleaning, mag, cc and reassembly. I bought my carb and intake (RPM) used. I did mine with LY rods and stock forged crank and damper. H-Beams are overkill so I was told. I used KB pistons @ 9.5:1 and the Comp Cams XE274HD cam. Be careful on the intake choice. The RPM has clearance issues on most B bodies. I really had to work at getting it to fit, including losing the choke horn on my Holley. From what I have read, you can get there if you port your heads at home using the MP porting templates and have them machined for bigger valves and hardened seats. I've done the porting before. It's time consuming but not that bad.