Well, there you go... @thatcabledude is the other go to guy for LS info.
Pretty sure we are in a democracy still, sound like the vote is in. LS swap! Might I recommend a 3rd gen and 5speed tranny?
Whatever @cruisermatt says is gospel. He has been great help with my LS swap in the 73 series.
Price wise, I got lucky, bought an entire truck that was wrecked and was able to net zero cost after selling all the parts I did not need.
As much as I appreciate someone willing to tear into the 1FZ, (and I have done 3 rebuilds now), please consider a LS swap.
Sell the supercharger and you should have about enough to do it. It won't keep up with your other ride... but it is a start