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Discussion Starter #1 (Edited)
I recently purchased a 1991 gt. It came with pulleys, intake, hooker headers, hurst short throw, 3.73's, and a 3 core aluminum radiator. I want to make a few more upgrades. I have read that a throttle body, 70mm MAF, and a fuel pressure regulator would be a good place to start. I am open to suggestions. I have knowledge of the inner workings of engines but am not an expert. Lets start with a $500 budget. I have seen all these parts on Ebay (namebrand only of course) for around that much. Many Thanks!!!
 

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I've read that brass diffuses heat better lb for lb than aluminum, and of course
it's lots cheaper. the 3 row GDI (Go Dan) radiators at places like Pep Boys and Auto Z
are actually quite good quality. I bought a no-name off ebay (after doing a little
reading up and asking a couple questions) and am very happy with it - cools my
warmed up 351 in my Linc Mk VII very nicely. Saved maybe $30 from a GDI.
(Tight budget)

I've also read that the ecu will "work around" a change in fuel pressure.
I'm sure there might be more to it than that, or that it i.e. doesn't do it
at full throttle, or some such. But with mostly a stock engine, I think your
money might be better spent elsewhere. Like maybe 1.7 roller rockers for
more mid range torque to compensate for the stock heads, and to get a
little more of the potential out of the intake.

If you don't have a problem going into the motor a little, a set of even
regular GT40 iron heads are an improvement, and P heads even more.
But you need P specific headers for the P heads. You might get lucky
by scouting around and pick up a good used set of GT40's for somewhere
around the cost difference of the aluminum radiator vs brass. I have no
doubt you'd get more bang for your buck with heads and rockers versus
alum radiator & fp regulator.

I got my rockers off one of the Mustang forum classifieds.
 

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Discussion Starter #3
Yeah, I looked into roller rockers, but am not sure this is where I want to go. The radiator came with the car and I just upgraded the water pump to a Hi-Flow that I got for around $80. Very good colling any way, its thermostat control so fan only runs intermttently. Thanks for your opinions!!
 

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For 500 bucks i would definatly go with nitrous. You could get a good dry system from NOS for that much I think
 
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