1970 nova motor choices

[hamlinmotorsports]

Sorry if this isn't a good question but I have no idea. I'm wanting to turn my nova into a stocker and I've asked before what motor should I go with. I had alot of ppl have told me to claim it as 69 or 71 or 72 and use one of those motors. Now let's say I do that and it gets questioned at race and it's check will I be allowed to race or DQ'D?

Now while choosing a motor I don't have the money to buy one ready to drop in a car. I'm going to have to buy it piece at a time and see if someone could put it together that knows what they are doing. So if I were to choose a motor from 1970 which one would be a good one to use? And what are the best brand parts (pistons, rods, crank, etc) any help would be much appreciated thank you