Quote:
Originally posted by boostin94
First thing I would do with that GS is save the money and buy a turbo engine for it. You can mod the piss out of that thing and you will still never have the hp ratings of a stock turbo engine. Once the engine is in there, you can go nuts with it, but the 420A is not as strong as the 4G63 when it comes to turbos.
As far as reliable, I have heard no complaints about the 420A. Supposed to be a really reliable engine.... but then again, so is a B16 
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As far as just bolting in a 4g63, it's virtually impossible. The cost alone would run you more than simply selling your car & buying a factory turbo model. Which is what I suggest. The internals on a 4g63 can withstand upwards of 450-hp stock!