Yes, great subframe ! I'm working on making the mounts for the crossover to the left side of the frame too. It will fit with the battery in place.
I also have a strip of metal ready to weld to the lower clamp near the footrest to connect to the clamp just beneath the saddle for extra strength.
1300cc 217Nm/207Hp NOS-injected VMax (1985)
500 cc 1950 BSA chopper (1983)
750 cc CB750 chopper ( 1990)
1200 cc Z1000 dragbike (1976)
300 cc MZ transporthack (1989) winterhack
900 cc BMW R 90/6 hack ( 1976) summerhack
750 cc BMW K 75 RT ( 1993 ) daily driver
Age is an issue of mind over matter. If you don't mind, it doesn't matter ( Mark Twain )