Need Advice on Engine

[FoxGranadaChuck]

Gentlemen:



Once again, I am needing advice on a particular issue of my PT Cougar sedan buildup. The issue now is the engine.
I am torn between three basic routes. The first route, and the one to which I was firmly commited until just recently, was to get a FRPP GT-40X 5.0L crate motor. The reason for such an engine would be factory-type driveability and reliability, which would be important, being that I am planning on driving my beloved Cougar on the Hot Rod Power Tour. The drawbacks would be 1) a relatively steep initial cost and 2) (most importantly) its hypereutectic pistons, which would make nitrous or a blower in the future a no-no.
The second option would be a FRPP 347 stroker short block. This would have the nice beefy Sportsman block, forged pistons, and a steel crank. Even better is that this engine is balanced like a regular 302 (28 oz. offset, as opposed to the HO's 50 oz. offset). I would love the strength of this short block, but the main obstacle against this route is fuel economy. I don't want an absolute gas hog, especially if I am driving on Power Tour. The 347 stroker motor with a 90hp hit of nitrous would be REALLY sweet, though!
The last option would be to obtain a 5.0L HO short block from a chain store and build it up from there. I would be adding my own heads, intake, etc. And with forged pistons, I would be able to use either nitrous or a blower in the future. The only drawback (?) would be that I would be spending more on the chainstore shortblock than I would on the FRPP GT-40X crate motor.
What say you guys?!