First Engine Build - Advice Needed

A 65 383 should have a forged crank, good rods, small port closed chamber heads. Add a windage tray, high pressure oil pump spring, "A" body oil pan, descent pistons, at least Sealed Power Moly rings. Cam with about 268 duration and matching valve springs, double roller timing chain, 68 or newer intake and 4 barrel Carb. Big block TQ would be nice. Big blocks are nice since the intake is dry, easy to swap. 72 up heads flow better and have hardened exhaust seats if you can find a set for a reasonable price. You will probably need exhaust valves. Do not buy anything until a machinist measures everything and you decide what direction to go. Typically you can get a nice running 383 with a bore and hone with torque plates, a good valve job, balance, cam bearings, resize the rods with standard ARP rod bolts. A lot of times a forged crank just needs to be polished. You can spend as much as you want, great advice above. Find out what you have. Check your options. Be realistic with what you want. Is it in your budget? Add it all up on paper. What do you have to do to the rest of the drive train to have it survive? What brakes are on the car?