dude, i KNOW the feeling!
ive been just trying to get my 78 running with the stock L28, and i cant even get that to happen yet, and everytime i get under the car, i see all the rot and rust.....and it adds up and gets depressing!
nevermind the fact that my 240sx hasnt been running right, if at all, lately either.
just remember, deep breaths. and don't rush. it will get done.
Rome wasn't built in a day y'know
.....crap...but then again, they didn't have to deal with 30+ years of rot and rust when they built rome.....