I'm getting a transgo kit put it soon, but I'm not sure which one to buy. I wanted the HD-2, but I'm not having the trans pulled so I won't be able to use the whole kit. I found a "stage 1" kit #TRG-SK4L60E, and I'm just wondering if thats the HD-2 without the mods that the trans has to get pulled for. Any help is appreciated, Thanks!