Well, let me start off by saying TY to everyone who replied to this thread, I appreciate. Unfortunately I have come to the conclusion that it would be financially irresponsible of me to drop my whole $4k on a supercharger. My girlfriend also stands behind this statement....LOL

Soooo, I have decided to do about $1200-$1500 worth of upgrades. I purchased FRPP 3:73's a few months back and did not have them installed (returning them for 4:10's). I am a field tech. for Tickets.com and do lots of traveling before spring training for MLB in FL (not that you care). Therefore I spent lots of cash in December and January for travel and have been receiving all my reimbursement checks, hence the ability to save some coin. I have my appointment for this coming Wednesday for the gear install. I had a couple of questions:
1) Is this what I currently have in my stock rear end?
http://www.mustangsunlimited.com/itemdy00.asp?T1=M4204F288+01
2)Would it be wise to just purchase a tuner like the SCT X-CAL so I can adjust my speedometer and then have it for other uses for $400 or just get the speedcal for $100? I like the idea of the tuner, but will it be worth the $400 consider what I have for mods (BBK O/R X, soon to be Flowmasters catback, soon to be 4:10's, soon to be TB and Plenum).
3) The shop that is installing the gears is not to familiar with my Traction Lok. I did not ask how much more to rebuild it. Does this procedure usually cost more in addition to the gear install?
4)Is this Ratech kit comparable to the Ford Racing kit?
http://www.mustangsunlimited.com/itemdy00.asp?T1=RT46+01
*4:10 Gears - 210.00 (Mustangs Unlimited)
*T-Lok Rebuild Kit - 50.00 (Mustangs Unlimited)
*3QT's Royal Purple 75W90 - 30.00 (Mustangs Unlimited)
* 4oz Friction Modifier - 4.00 (Mustangs Unlimited)
*Install Kit - 80.00 ?Ratech? (Mustangs Unlimited)
Do I need anything else? I told the guy I would supply EVERYTHING for him.
Thanks...