have a 98 cobra ran good as hell then got in a wreck had to get whole new rear end car feels alot slower now first ? first rear thought had stock gears now im thinkin it had 410s now i have 373s will 373s feel that much diff from 410s? and second ? if its not gears idk wat it is will a diablo make that much diff if i increase timing 1 to 2 degrees and put on the 93 tune?