I have a 84 toyota pickup carbuerated. spark plugs get black tips, cold starts, engineshakesandturns off, once itscompletely warmedup itstarts upjust fineand runsjust fineas long as i dont let it cool down.any ideas?

I have an 87 4runner tht is stock except for the 31s. and i have some Qs.
ive heard of people putting 20r heads on their 22re to raise compression, now does tht work? by how much? and will it effect my smog?
ive also heard of putting in a 268 stick i think it was to help with performance and stiffer valve springs, but how would tht effect my smog?
and last of all my rear springs are straight/flat they have no arc at all makinng my bacxk end sag, ive heard of 63" chevy...

i have a 94 4runner with blown heads i'm trying to part out. the truck is real nice and i just needed it for the rear dif and some small stuff but i hate to see it go to the crusher without doing its kind some good. it has 212k miles on it. here is the link just let me know you saw it here if you email me or just post it here.

http://philadelphia.craigslist.org/pts/1445172387.html

hey i've heard i can use fj 80 cruiser springs in the rear of my 94 4runner and i'm just wondering how i should go about doing it.... also do i need spacers for the front... if sombody out there that has done it could hit me up that would be awesome!!

[FONT=Times New Roman]I accepted Stapleton's invitation,and we walked together.[/FONT]
[FONT=Times New Roman] [/FONT]
[FONT=Times New Roman]'I know that you are a close friend of Sherlock Holmes,'said Stapleton.'Has Mr Holmes any ideas about Sir Charles death?'[/FONT]
[FONT=Times New Roman] [/FONT]
[FONT=Times New Roman]'I'm afraid I can't answer that question,'I said.[/FONT]
[FONT=Times New Roman] [/FONT]
[FONT=Times New Roman]'Will Mr Holmes visit us himself?'he...