found a motor that was correct speed and hp at grainger for just under $200.
the replacement motor was shorter and larger diameter.
made a new base to elevate the motor to the proper height out of 2.5" OD square tubing.
installed the base with motor cradle and made measurements before cutting the shaft.
the replacement motor is a AO Smith 4UU30. figured the base and screws cost abt $25.
for anyone that finds they need to replace the fan motor in a carrier ac, this is much cheaper than the $380 that i heard the carrier motor cost. seems that those that still have the carrier parts are selling them by the troy oz.
motor is reversable which takes the worry out of cutting the shaft.