that board is filled with the widest array of automotive knowledge- and every other kind of knowledge, actually- that i've seen online, and since a 68 Cutlass is pretty much the same car as a 68 Chevelle it's the first place i'd start asking questions.
I wanted a 68 for my first car and ended up with a 76. It was also nice looking. The configuration is very similar between G and A bodies other than the obvious sizes.