Looking for MT-170/U (M1-B1-D1) Shock Mounting
 

I'm looking for an MT-170/U (M1-B1-D1) shock mounting base. Its dimensions are 22-3/4" x 10-3/8" x 2-1/2". The mounting base was equipped with four (4) Barry Controls shock mounts and used in WWII aircraft (B-24, B-17, B-29, etc.) to secure RCM gear (AN/ARR-7, AN/APA-10, etc.). Can anyone help?

Thanks,

J. P. Hancock