lowering springs and shocks?

[64hotrod]

Hey guys, first i just want to say, what an awesome forum. i'v been reading the archives for months now and it has been my number 1 source for info on my rebuild. anyway, my questions are,#1 where is the best place to order drop springs and shocks? #2 how low can i go without bump steer becoming a BIG problem?#3 i plan on dropping in a bb 402 so how will that change things. i also plan on getting 2 1/2 drop spingles and converting to 5 or 6 lug disk.(i'm 6 lug drum now out of a '69) also will a steering stabilizer really help if bump steer is a big problem?sorry for all the questions @ once but i need to order stuff to keep working on it. thanks, steve