Can I set the compile library path used by npm in 'npm install'?

I have an application that runs using node.js - in order to run down a particular bug, I have a custom version of node (not the system default install) that I want to run my application with. So in my start script I change:

#!/usr/bin/env node

to

#!/Users/cmlacy/Dropbox/Engine/code/node-v0.8.9/out/Release/node

When I run the application, I get a series of errors that I don't get before the change:

crispin:node cmlacy$ ./engine.js 
dyld: lazy symbol binding failed: Symbol not found: __ZN2v816FunctionTemplate3NewEPFNS_6HandleINS_5ValueEEERKNS_9ArgumentsEES3_NS1_INS_9SignatureEEE
  Referenced from: /Users/cmlacy/Dropbox/Engine/code/Engine-Developer/node/node_modules/mongodb/node_modules/bson/build/Release/bson.node
  Expected in: dynamic lookup

dyld: Symbol not found: __ZN2v816FunctionTemplate3NewEPFNS_6HandleINS_5ValueEEERKNS_9ArgumentsEES3_NS1_INS_9SignatureEEE
  Referenced from: /Users/cmlacy/Dropbox/Engine/code/Engine-Developer/node/node_modules/mongodb/node_modules/bson/build/Release/bson.node
  Expected in: dynamic lookup

Trace/BPT trap: 5

I'm assuming that this is because some of the dependencies in node_modules have been compiled against the wrong node libraries - how do I go about changing the version of node that is included in compilation during an npm install?