[Boostang]

you can easily out do a blower set up with a n/a nitrous set up..
its not about how much your no2 ur motor can handle its about how much ur willing to put in it.. with a forged rotating assembly, high compration ratio, good set of flowing heads, nice cam (for your specific setup), and a good gear in the rear id pick the no2 car over the blower car any day.. thats my opinion tho..

this is what was in my n/a 2v set up..

manley flat top platnium series pistons bored .020 over: 699.00
speed pro steel rings: 159.00
manley h beam rods stock stroke: 400.00
03 termi crank: 250.00
MMR stage 2 porting: 800.00
custom cams:700.00
machine work: 721.00
gears and install: 400.00
gaskets and all bolts rough estimate: 350.00
used no2 kit: 350.00

now all that came out too be 4830.00 a little less than a kenne bell 2.1 kit.

now with a blower set up you will need all internals, machine work, and bolts and maybe gears i stated above.. you dont have too go .020 over tho..

so with the blower being 5000 and the needed internal parts and machine work and bolts (maybe gears) youll be spening roughly 7500 bucks..
now thats not even including the tune..

and the fuel system youll be needing for both set ups (n/a and fi)

ths is just a rough summary of what youll be looking at spending with both fi and n/a.

 

[Boostang]

yes true but not only did my build save money it made more power than the one you did..
5.4 is a good choice but id go 4v 5.4 if i were someone interested!

 

[Boostang]

99-04 GT block is an iron block. 2005+ 4.6's are aluminum and are the strongest produced aluminum 4.6 block. Dont quote me but I think the weight reduction was in the neighborhood of 60 lbs

your half right..
ive seen plenty off 05+ blocks crack.. but ive never seen the teksid's crack so the teksid is the stongest block made for us..
but 60lbs is correct