Greetings, first post..

I just bought a 72 2 door sedan and I'm trying to figure out what my best bet is for a badly needed front suspension upgrade. I've been digging through the archives but I'm not that familiar with datsun/nissan models. So my questions are:

Whats the best bet for a front suspension upgrade on a US sedan? If Stanza then what years?
What's a 200B & 240k?
I have a friend who has a bunch of 510 stuff, are the struts/lower control arms an option on my 1200?

I'd love to hear about some junkyard setups on US cars. Trying to build a quick autocrosser on a moderate budget. Thanks.