Finally going to build my 1st stroker motor this fall, and am getting a parts list ready. Plan is to build a 512 with 10.5:1 compression, use right around .600 lift solid flat tappet (try to cam it so I can shift around 6,000). Use my current heads (Trick Flow 240's) and will be using my TTI 1 3/4 headers (I'm sure it will choke it some, maybe update them down the road at some point). Trying to decide between doing a 400-512 or 440-512 build. Any suggestions on which block to use for how I'm plan on building it? Is there another stroker combo that would work better with the TF 240's?