ill stick with the 305 until i can get my hands on an lt1.
Just so there's no misunderstanding of what I posted earlier, the post was mainly in regards to the Gen I and Vortec 350 engines. The LT1 is a "GEN II" engine, and has many differences from the old-school Gen I or even the Vortec 350 engine.
I think after you do your research and are more acquainted with the small block Chevy, you will understand that an LT1- while being a very good engine- is a kind of "lame duck". It was only made a few years, has a very different ignition and induction system as well as "reverse cooling"- all of which conspire to make it a bit of a chore to work with.
IMO, you could do a whole lot worse than starting out w/a Vortec-headed OEM roller cam engine from a '96-up truck
, Suburban, etc.
The intake is different from a 305, as is the valve train (unless you're talking about a roller 305 Vortec 305, but they're not worth getting when you can have a 350 for about the same price, IMO) and some other details.
Bottom line, do some studying and when you have a better grasp on things, I think you will see that the 305 is a stop-gap, and a 350 Vortec engine is a good platform to build a performance engine with.