Where to get a front pump for a 42RH (A500)

There is a 7/16 head plug facing to the rear of the transmission on the passenger side,that is the reverse test port. Install a oil pressure gauge and check pressure(make sure you use a gauge that goes to at least 300 psi). Car running in reverse it should have minimum 90 psi,then step in the gas(wot) and hold the brake to keep the car from moving and the pressure should go up to 175-200 psi,some times higher depending on a shift kit.
There is also a test port on passenger side in the middle of the transmission, which you can also test in drive.You will be checking the forward clutch pressure will be 50-120 psi.Wot will make the pressure rise.
The on test port in the front closest to the bell housing is the 2nd gear test port,no need to test for checking pump pressure.