ive got an 03 f7 with the sp track. Just looking into prices for some woodys studs and how big i can go with out turnning my tunnell into shredded cheese, i think i want the gold diggers but i couldnt find any prices, and besides, i have no idea what i need to get along with the studs. tunnel protectors, track drills, backers nuts, patterns, tunnel clearence checking, idk my head hurts already.