check out this site in the classifieds http://dimequarterly.tierranet.com/ earlyer this year i picked up my 71 510 4dr l20b a87 closed chamber head, weber,elect ign,new 2 14" exh, zx 5sp, 4.11 rear, st springs and sway bars, tokiko's all around steel braided brake lines and much more for $500 it came from mesa arizona he met me in l.a and i drove it all the way home to yosemite and i still drive it evryday i just needed to put some interior in it and do a little bodywork to clean it back up and i just picked up a 71 wagon for $2200 that is very nice lots of mods there is good deals out there if you look hard enough and you cant go wrong with a 510 the coolest datsun ever produced, easy to work on, no smog, and i dont think they will go down in value if you decide to pick one up and need some parts let me know i will be parting out a 71 4dr with a L6 in it soon