GTV2000 engine swap

[JohnHuntD@domain.elided]

1) Does anybody out there know how much a '73-74 GTV2000 f.i. engine weighs 
with all engine-mounted accessories but not including fluids?

2) At the risk of outraging all self-respecting Alfisti, has anybody 
successfully swapped into a GTV2000 without butchering it a 
larger-displacement (i.e. 3.0 - 4.0 liters) all-aluminum engine from either 
some other Alfa or another manufacturer? 

I love the looks and handling of my '73 GTV2000, but it is sorely lacking in 
the 'go-power' department. A respected local Alfa mechanic did a compression 
test and test-drove it, and concluded it is a "good-running Alfa" as opposed 
to having a sick engine. 

I'm told with the usual hop-up modifications the power can be boosted to 
about 160 HP, but that power is only achieved at very high revs. I'm more 
interested in increasing power in my daily-driving engine speeds of off-idle 
to 3-4,000 RPM. 

I'm not keen on turbocharging, and I've not heard of a supercharging kit for 
a GTV2000. I've done engine swaps off and on for 40 years in American and 
British iron, and I'm wondering what the alternatives are for installing an 
engine with substantially  more displacement but light enough to not upset 
the Alfa's weight balance and making it a nose-heavy beast. Somebody out 
there has bound to have done it and lived to tell about it.

Thanks in advance.

John Doak in Baltimore, MD
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