1990 L98 engine replacement

Hello,
I'm looking to replace the L98 motor in my 1990 vette.  I've ran into a few road blocks.  

1. No one carries L98 motors anymore
2. I'm looking at a vortec head engine that will not fit my TPI set-up.
3. I'm looking at the ZZ4 crate engine that may/may not fit my original intake manifold (TPI set-up)

I would like to purchase the vortec head engine but do not know where to find an intake system that will work.  Any help would be greatly appreciated.

Thanks,
Jered  

If you are looking for an intake to fit L98 TPI and Vortec heads, look at edelbrock, Scoggins Dickie. Not cheap but will work. I went the carb route.