Honestly I think its all a matter of opinion on the shift kit. Ive heard some mechanics say that its going on ruin the tranny and others say its the best thing you can do. The fact to it is that you need to look at what hurts OUR trannys the most, not fords or chevys but the A604 tranny. From what I understand our tranny components are fairly strong but they build way too much heat and it destroys them. Also as we have discussed before the factory actually designs these trannys to slip the gears so that you dont feel the shift as much. Its not really that its shifting harder its just that it engages faster so in turn it feels harder. Think about it what would you rather have gear slip or direct engagement. I think the shift kit is misunderstood. Ive also found that after asking most the mechanics that say dont do it have done it on chevys and fords. If you look at the kits that are made for those cars they do something totally different than the one made for ours. Some here will agree with me others will probably say I dont know what Im talking about. It all just depends on who you talk to.