adrenaline junkie

hey guys, been a long time mazda fan and been looking for just the right rx8 to add to my collection, so i ave tried to learn all the ins and outs from here as i can, and i have found a rare gem. a 04 rx8 with 59k on the clock,6spd mt, i have an appointment with the local mazda dealer to get a comp. test. but i had a few questions i am hoping to get answered.

the car had 4 mazda dealer modification stickers under the hood and was wondering if anyone knew the codes, they were kinda faded so i got what i could read, (they were all done at the same dealer) the first is msp, 2nd is 1704, 3rd is 3nhg-18881-m, and 4th is n3z2-1881-p, any clue as to what theses fixes are, guessing it wasnt the taillights as one if fogged, the other was cracked and replaced. the batt. was new but the starter seamed a lil weak. and the oil had been changed reg. and had 91 to 93 fuel (93 is hard to find in my area) fyi: mazda dealer in my area is kinda shady thats why im asking on here to see if there is any difference in what they say. thanks