hey man not a problem when im all done i also plan on doing a short and sweet right up with lots of pics. ill be glad to help. it will be a little easier for you since your 04 gt and the navi have more in common than my car. both use returnless fuel system and both use cop so it will be a more straight forward swap. i have a 2001 navigator engine straight out of the navi and it was pretty much fully dressed minus a couple things as shown in the pics. i had talked the junkyard down from 1600 to 1300 for the whole engine and not just a longblock from the throttle body to oil pan to exhaust manifolds and all sensors and wiring in between. i should also have some spare parts which i could put up for sale especially the fuel injector wiring with all 8 cops i have pics of everything. just send a pm if you need anything and ill see what i have. you can use your harness, cop, and fuel system that is in your gt. if im not mistaken, you can also use your 8 bolt flywheel or flexplate along with tranny (whichever you have). if you are wanting a high compression ratio(10.5 or 11:1) which would give you more power, on a N/A navigator motor with a few proven intake manifolds to run, bigger injectors and fuel pump, factory gt wiring harness, sensors (MAF included), factory ecu, and factory cobra exhaust manifolds with a tune you are going to be looking at a ballpark range of 350-380rwhp and probably 375-400+rwtq, and you will have a great torque curve. im sure there are many that would agree with me. there are many proven setups. the main things are the intake you choose, how much fuel you are pumping in and probably most importantly your compression ratio. there are obvioulsy with a few variables. lets just say if you do it right, you will not be disappointed. MMR upper intake is going to kill your torque. that piece really is made for boost and lots of it. it will make the intake runners really short. your best and affordable options are a boss 302, coyote 5.0 (what i have) or 99 or 01 cobra or even mach 1 intake with adapter plates (which are getting hard to find). all three will work. depends on the budget and what you want. boss 302: on ebay for around $475-$500, can use 4v alternator in top center possition, i think 8-9" runners so good hp and tq tradeoff, guessing better for wild cams and high compression setups. coyote 5.0: around $200, need to relocate alternator, i think have 13-14" runners so great torque, great for milder combos. cobra/mach 1 with adapters: intake around $500 (could find deals on forums) ive seen $300+ for plates. will work fine, easier to bolton, long runners and could port for a better hp and tq tradeoff. all work and hope i could help you out