510 questions because I'm a newb.

I have many general questions and would greatly appreciate it if anyone can answer a few questions or direct me to a website that will answer some questions...

Questions:
=Whats a SSS1800 exactly?( i know its a 1.8L engine)
=What are the differences in 510's from 68-73?
=Whats stock rear end gears?
=Are the head lights all the same sizes??
=What are popular tricks for more performance?

Those are just a few I thought of now. Please help me!

Thanks.

SSS L18 = closed chamber head, hi-comp(flattop?) pistons, dual SU carbs, better cam(same as L20b) and dist.

check out the model guide at www.dimequarterly.com

3.7, 3.9, 4.1 from early to late...

5-3/4", all the same size

suspension mods
SU's... mikuni/weber...
header
suspension mods
SSS dist
DAMB cam :^)
suspension mods