Is this a base model or SH. There is a difference, the block on the base model is different than the SH. Looking at
Majestic Honda's Online Parts Catalog, a block (Looks like it includes everything, except the external accessories like power steering, alternator, etc.) for a 2001 base model Prelude has a list price of 3061.71. Majestic will sell it to you for 2296.27 though. Thats just for the short block. The head lists for 1813.52, but sells at 1360.11 from Majestic. So a completely assembled engine probably costs between $3500 and $4800. Are you sure the engine is a total loss? Maybe you could save the head and just buy the bottom end. Or even repair the engine, which would almost certainly cost a lot less. Either way, good luck, I know how hard it is to not be able to drive your Prelude.
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2001 Prelude Base (#173 DSP)
Electron Blue Pearl
A lot of go faster, turn harder parts.

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WWTD? - What Would Tien Do?