I see. So it sounds like you just want to move to a different motor and not really worry too much about the current one.
LS swaps seem to be pretty popular nowadays. I think they're cool personally, but I'm not mechanically inclined enough to try and tackle something like that. Not sure what kind of dollars you'd be talking about either. There are plenty of guys on here who have done them though, I'm sure they could help you if you went that route.
If I were you, I'd spend some time thinking about what the long term plans are for the car.
Do you plan to keep it for a long time or forever, or just for a few years and sell it? If you put a lot of time/money into the car you may not necessarily get it all back if you sell it later in a few years.
Do you want a nice cruiser, or a street/strip car, or do you want to go the LS route and make it ride/handle/perform like a modern car with the old school looks?
I'd figure out what you want to do first before you spend any $$$. Once you figure out what you really want out of the car, then you can start tailoring things like the engine, trans, rear end, suspension, etc. all around that main goal.
Busy times suck at work, but at least it's not forever. We were really busy here at my work around year end closing the books, but now it's back to normal which is nice. It's about a month of crazy hours and then back to normal the rest of the year.
Good luck with whatever you decide!
1972 Chevy Nova owned since I was 15 yrs old
12.36 @ 109.65mph w/ 1.72 60ft