There's approx $500 bytes free in the utils ROM, and the 3.50 SRAM utils take up something like $3fa+$a7 bytes. It should fit!
Sadly the $a7 bytes need to go in the MOS region, as they deal with accessing sideways ROMs. There is all of 1 easy byte free in that part. So some 3.50-style rearrangement will be required.
There's approx $500 bytes free in the utils ROM, and the 3.50 SRAM utils take up something like $3fa+$a7 bytes. It should fit!
Sadly the $a7 bytes need to go in the MOS region, as they deal with accessing sideways ROMs. There is all of 1 easy byte free in that part. So some 3.50-style rearrangement will be required.