The ATK Baja stroker is, what, 3800 bucks and gets you 80 more horsepower?
I'd never thought of mods in $$ per HP but it's kind of alarming when you do.
6.0 swap is probably the best bargain to be had, if you can get it past smog.
Chevy LQ4 was what I was thinking. I've done an LS swap in a non emissions controlled vehicle but am a bit intimidated by CARB's rules for swaps in a 98. Anyway, I should probably stop my attempt at thread-jacking.