Ok, well AFAIK you have to use whatever case style your tranmission will acccept so In this case It was a forward shifting G52 transmission and swapped to a forward shifting R151F, so this kept my shifters pretty close to the stock positions because the two transmissions share measurements that are very close. The only thing that sucks about this Is I will have to r/r my 4.7 gears to a topshift case or convert It In order to get those gears In the rear where they belong, I definitely agree with you there. Also the gears go with the case because It Is clearenced to accept the gears. I have a couple of cases laying around Including my stock case that came behind my G52 and at least one other forward shift case and one top shift which was given to me because It had a broken Input and I took It apart and put the stock 23 spline Input from my Turbo case In there as my Marlin case had a 23 spline total Spline Input Included with the 4.7 kit. This Is how I will have 23 splines throught. I hope I am not confusing anyone, Thanks In advance Worley