Thinking of building a mid budget 454 or 468 after done to replace my very high priced parts Hemi.

Nothing super speacial. I have a2 bolt main early 70;s block sitting here. Figure can make 4 bolt easy enough and would be line boring anyway. have set of caps off old block KI trashed. Will be roller cam of coarse probablyu 280* at .050 range .750 lift. Figure 12 ti 14:1 forged pistons with good ring package. Some afr or brodex heads wkith either tunnel ram or big intake Mfi on it. Zoomies only choice on headers. If c an swing like to shaft miounted rocker for relioablity mostly. Much as goes against my grain probably belt drive for cam with cranj trigger iginition since no chevy mag here.LOL

So idea what can figure reasonable power? Know what desktop dyno says and while can be pretty good lot of things it does not allow for that make difference. like prted rings or not.