I got everything from Ian at Mendeola Powertrain for just under 18k, included a dual disk 9 inch clutch pressure plate and flywheel, and the starter
They have a variety of gear ratios and bell housings
They also have a lower cost trans with syncros that they can turn into a dog box but it would have an H pattern
I also got a shifter from them for around 300
My trans is good for 700 lbs torque and can add a pump and cooler to it if necessary