Heh... well, it isn't exactly plug and play.
Basically, the LT1 debuted some new technologies for the SBC. It is the first true dry-intake setup. There is no coolant that passes through the intake manifold at all, and the only thing that it flows is air. I was referring to using an LT1 intake in place of your TPI system. The LT1 intake is very similar to the TPiS Miniram and it's about 1/5th the cost. In fact, I have an intake I'd sell you. There are a few mods that need to be done to an LT1 intake so you can use it on a SBC:
Drill the hole for the distributor. The LT1 uses an Optispark so there isn't a hole on the back of the intake for a distributor. There are templates for this and it's a relatively simple process but you MUST be precise.
Drill coolant bypass holes in the intake and tap them for coolant fittings. You then use a y-block to join the coolant crossover and return it to the radiator.
I wouldn't consider any other setup for a PFI system as simple as TPI. My '93 LT1 is batch-fired just like TPI. Power increases are massive, underhood clearance is dramatically increased, and if you can get Corvette fuel rail covers that will clean it up 'big time.' Plus, you get to enjoy watching people scratch their heads over whether your engine is TPI or LT1.
Throttle bodies also interchange between the two (as far as I know). Fuel injectors are the same as TPI. You will need two fuel rail adapters because the LT1 used quick disconnects. They are about $15 a piece and they convert to AN-. Easy to go from there to your fuel line. If you're interested, watch my system. I'll be converting from LT1/carb to LT1/EFI in a few weeks. I just need to figure out how I'm going to sump the tank.
'72 Vega with '93 Camaro LT1/M29 T56/12 bolt 3.31. 16" IROCs all around. Sanderson headers into duals with an H-pipe and Flowmasters. It's loud but at least it's faster than your grandma's Buick. pwned.