Shifter is center. It has no problem going into first, third, or fifth.
I drive over speed bumps with no problems. The oil pan has plenty of clearance which is more than I can say for my exhaust. It sits just a bit low when going past the axel. Other than that, you should have no problems. There is still room to keep the A/C Pump.
This first picture you get an idea of how far from the ground the oil pan is.
Also you will notice that there is room to drop the pan and get it out without having to raise the motor.
This next pic shows that there is room for the AC Pump
mounting bracket behind the cross member.
I'm not running the AC but man you can bet it aint gonna be long. NC is burning up.
Back on the topic of RB swap kits.
I think there are too many options for any type of swap kit other than bone stock. Even with that, everyone is going to
want to put in the intercooler. there are may ways to do that. Also, the stock radiator is going to have problems as the RB's have both hoses on the passenger side. That leads to many radiator options.