ok so i just got myself a t56 from an 04 cobra, it doesnt have the .74 and .50 5th and 6th final ratios....now if i were to want to swap them out from a .62 to the .5 final ratio......all i need is the gears right? I know D&D performance has the 5th and 6th ratio that i want for 200 bucks....im being told something else for 600 bucks from another source of mine...i want just the gears, not anything else heres the link to what i want that 200 bucks...let me know if this is right or not? D&D Performance - BG19 5/6 Driven Gear 37/29 Teeth