4 speed hump location

69 Dart 4 speed hole location. Anybody have measurements of where it should be? I don't have all the parts for the 4 speed yet. I have the floors pans cut out and would like to weld in the 4 speed hump. Plan on using the 727 until I have everything for the swap. Or how to use the parts I have to weld in hump. (318 OE engine, 340 block , 360 still connected to 727, 68 A833, shifter, no bellhousing, no linkage) could I just bolt the trans to the crossmember and use a jack for the front?