You'll have to cut the hole for the shifter as the auto shifter just has a small hole for the cable. I saw somewhere where the dimensions and locations were given. My 69 Camaro is still apart. I can get the dimensions from that if you need them.

Do you have donor car to get the four speed parts from? That makes life a whole lot easier as you won't have to nickel and dime yourself to death by searching for all the little pieces needed for the conversion.

Somethong else: Do a check of the first gear ratio of the transmission you are looking at. It will help you determine which rearend ratio to get. As Hank said, with a low first gear, you can get away with pretty high rearend ratio. Good take off and good cruising RPM. Of course, you will experience a larger dop in RPM btween gears when shifting compared to a "regular" or close ratio trans, but if it's just a cruiser, it won't be like you will be worried about dropping out of the engine's optimum power range each time you shift.

Shifting is fun!