OEM or Upgraded Internals?

[Rocko]

Iv been doing some research lately trying to figure out what I want to do with my car In terms of a Rebuild. I Guess I should give a little background on the car before I go asking questions.

The car is a 91 Coupe with an SR20DET Redtop swap. I just bought this car as a project and it came with a ton of parts already installed including a Forced Performance Big T28, 3 Inch Turbo-Back Exhaust, Profec B Boost Controler, Ect.

The motor currently has rod knock so im trying to figure out what route i want to go with a rebuild or a swapping shortblocks.

I want to shoot for ~300whp on the Turbo I have with supporting mods (fuel,tuning, cams, ignition, ect.) and have a motor capable of holding 450-500 if I chose to go big later. I realise that people have put down 500+ on the stock bottom end (Iv seen mentions of Enjuku's 540rwhp race car on a stock bottom) but Im curious to know how long the stock equipment will hold together at that power level.

Here are the options iv looked at and what I know so far, any advice on these or any alternatives would be helpful:

* Swap on a stock used shortblock: Cheap but I dont think there will be any way to tell how good the condition is since it probably wont come with any compression or leakdown test results and most likely unknown milage

*Rebuild to stock: Not too expensive and well within the budget I have for the car but Im not sure how much HP it can handel reliably

*Rebuild with an Eagle Rods/CP Pistons Combo: Sure to handel the power levels im looking at but definately more expensive.

So what does Zilvia think?