Ron,
Buy yourself an MFJ model 4245 power supply.
It is a 45 amp switcher that will give you all the head room
you need. Besides, how likely is it that you will ever
transmit on both rigs at the same time anyway.
I have been running both my TMV71 and TS570 on one of them
for 2 years with no problems.
This thing is about half the size of the old Astron 20 amp
traditional model, and only weighs about 5 pounds.
Mike Duke, K5XU
American Council of Blind Radio Amateurs