69 Chevy SWB Transmission 4L80E with Big Block Fitment Question

[Chris92]

I have been searching the forum and can't seem to find a definitive answer on this.

I am building a 1969 Chevy SWB Big Block truck. I am going to have my motor mounted in the forward position using the aftermarket tubular motor mounts. I have a low hump cab. This is a 2WD truck.

Will I be able to fit a 4L80E transmission without many clearance issues?

If not, will a tall hump fix it?

Does a Turbo 400 fit the low hump? If so can I fit a gear vendors overdrive instead?

I want to use the 4L80E but I don't want to cut up too much if any of my cab. I know it can be done if I am not worried about that but I want to leave it as original as I can.

Thanks for taking time to read this....

Chris