Well, think I'll stick with the BB, all the parts needed for the TT install were taken into consideration and are available here at reasonable prices, but the BB will be easier to build, and besides it'll still have some room to crank some more power down the road, I'm guessing fuel consumption will be close to the 283 also.
I planned on a 427 instead of the 454 to lower torque a little, don't want to be breaking thinghs on a regular basis, I do have the original crank but needs to be turned .020 .020, and is a cast unit (casting 353638), you can find a NOS 3.76" stroke forged (plenty strong) crank for less than half the price of a nodular 454 (big plus), and I also like the higher rpm potential, but still open to suggestions here.
As far as heads go think I'll go with ovals.
Thanks