Theres a lot of things people are not telling you about the extra things youll need for the top swap. they are little, but they add up quickly.
Gaskets-$300
Injector connectors
Oil
Coolant
Vac line
Belts
Coolant elbows
Valve Seals (might as well, they are cheap)
Thermostat
Spark Plugs
S/C oil
rocker bolts
L67 MAP
That^ is assuming you basically have a 100% complete L67 to take parts off of. I would just put the L32 in, or L67, port it, and have more money for mods. you can always get a Gen V later.