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That's where the L33 comes in I suppose. I've been leaning towards that lately more than my other choices. Or perhaps an aluminum rwd V6 with enough aftermarket support to justify going with that instead. I'm ranking my choices as follows at this point:

L33 - cheap, easy to find, however might be pushing the size/weight limits even being aluminum
13b - can be gotten really cheap (in need of a rebuild), come turbo stock, small size, would keep the weight low in the bay and behind the wheels, but the maintenance and the chance you take when purchasing one are negatives
f20c - honda power, reasonably new ----, $$$$
ej20r - comes turbo stock, low center of gravity, however may be too wide for the bay, being jdm you never know what you're gonna get
porsche or bmw inline - reliable, but limited support and $$$
sr20 - turbo stock, inline 4 for size, but $$

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Consider the 1UZ. The early 90s ones can be had for pennies (people throw them away to run 2JZ :S) and have thick ass rods (exactly like early 2JZ rods vs the later VVTi 2JZ rods). They aren't quite as powerful as the L33, but you might find one so cheap it doesn't matter.

Did the Vulcan 4.0 V6 come aluminum block? Sort of a tall engine, IIRC, but not long.

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HOw bout the V8's that come in Land Rovers? All aluminum engine and fairly small. Not huge numbers for a V8 but it's light. Not to mention the aftermarket for those things. What about using a bike engine?

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I've considered it but in my mind it will probably be too much trouble to mid mount in a Civic. Getting the radiator cooled, ic poping, piecing together trailing arms and ----.. I already have the 240sx rear and I'd love the sound of a sbc.

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1UZ or VZ/MZ variant.

Why not.

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So you all think 1uz over the l33?

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A turbo L33 would kind of be l33t though...

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It would.

Idk get what ever is cheaper, I don't know if there's any discrepancy between the aluminum blocked L33 and the LM7 or w/e.

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The 1uz would be more attractive to me if it had a bigger bore and less stroke, but I'll still keep it in mind.

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Now I need to know what we are talking about :D