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If you do not mind comments from the gallery.
Depends on your goals.
The 2.7RS was known as the best running of the MFI motors. There are factory specs for the same basic motor but as a 3.0RS.
If you want a nice running street / sport motor. Use the 2.4 pump and have it converted to 3.0 RS specs. Run S cams or modified S cams with it and have the injector stacks opened up to S specs 36mm. You might be able to go a little past this but if you do let the pump builder know so he can compensate. Also let him know you are going to run a sport muffler.
MFI is sensitive to variations and it is going to deliver a specific among of fuel so if you have changed something, it may create a problem.
This is a proven combination and a great driver.
Want a bit more and really crisp motor, bump the compression and run twin plug.
Out side of that you are forging new ground and may or may not end up with a motor that is well behaved.
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