New and need help!!!!!

Bought a 73' dodge dart sport with a 318. Everything seems to be in good shape but being a…*gasp* import guy at one time this is all so new and,foreign,(heh) to me. I have been looking for suspension upgrades and such but outside of hotchkis i am unsure where to look. Any information on where to obtain parts (any parts,not only suspension) would be greatly appreciated. Looking forward to this new life.

I'd first get everything, bushings, ball joints, tie rod ends, up to snuff. Factory High Performance is pretty good. .88 torsion bars, front sway bar, Bilstein shocks, HD 6 leaf leaf springs in the rear. Usually no rear bar is required. What is the intended usage?