I'm be blunt and honest....
$750 can rebuild the engine, but don't to that... if need be replace piston rings and cam.. something 260-264 range with 112 lobe centers. simple and strong.
a 1bbl CARTER YF carb from junk yard is roughly $30-60 or rebuild your own (don't know what you got), and buy a rebuild kit and go to town.
the head, replace springs (maybe a valve if they are bad, but i doubt), and clean it, possible mill for 9.5 CR ($120 here locally)... nothing else. it's not worth the money. and a new SINGLE exhaust system front to back with 2 inch diameter
You already have a DSII, get it re-curved usually $75 plus shipping
you can easily get 120+hp out of this engine for $750, just the catch is, YOU have to do it YOURSELF. and it will stay bullet proof stock form, for a street machine, you don't need $150 in ARP bolts, $100 double roller timing chain, $1400 head work, $300+ high ratio rockers, or $400 headers.
things to consider after inspecting what you have,
Oil Pump... get stock, it's cheap replacement but if you find your old one is just as tight and the new one... use the old.
Harmonic ballancer, check yours, most likely it's usable and good. check TDC, most of the time it's still good.
torque converter (or flywheel/PP/Clutch resurface/replace)
re-balance rotational assembly of engine. (this is a positive, you'll NEED a shop to do it but it's NOT NEEDED, you'll be perfectly safe without)
good luck and let us know what you want out of this engine.