Thanks for the recommendations guys, they are appreciated!
The size of the nozzles would depend on how many cubic inches the motor is, how much fuel it'll burn (cam/heads/compression ratio, etc.), and the top end RPM you anticipate. To keep your system pressure high (but sane) at the top end, the nozzles will need to be sized correctly while delivering the fuel you need. Your current nozzles are sized for gasoline. Your system will likely need all new o-rings to go from gas to methanol.
The pump you mention is just a model number. That model came in 5 sizes. Find the serial number stamped on it and the first digit (before the dash) is the size: 00, 0, S0, 1/2 or 1.
The tuneup calculator is a great way to run through different scenarios to select nozzles. Here's the link to sign up (it's free):
http://fuelinjectionent.com/register.htm Once you are "Accepted" (you'll get an email) then the login links for the calculators are at the bottom of this page:
http://fuelinjectionent.com/tune.htm To use the calculators, you'll need a bunch of info about your hardware. If you don't have that, having your pump flow tested, etc. would be a great way to get started. You could also purchase a "Precision Calculated Tuneup" ($200) from me or we could flow test your components and entire system together if you like. Lots of options ranging from free (calculator) to $600 or so (full flow work) and several points in between.
Let me know if I can help!
Spud