Well I installed the #10 plate I could feel the diff. compared to the #11 Went to the track just before I pulled the #11 out truck ran this et 60 foot 2. 156 1/8 10. 268 @ 65. 61 1/4 16. 267 @ 82. 24 with # 10 60 foot 2. 193 1/8 9. 864 @ 68. 47 1/4 15. 510 @ 87. 63 weather was about the same. This was agreat bang for the buck and only takes about 15 min to do if you have been in the pump already.