It has been a while... The 010 was pin compattible
but I think is had a few extra instructions and did
a few specific operations differently that caused
some obscure problems...
A freind went to an Amiga show- I think it was in Bonn back in '91 and bought an "Accelerator" for his
A500... In the kit was a 68010, an oscillator can and
some wire all in a jewell case.
While there were a few issues they were nothing
compared to the pains of migrating from 1.3 to2.x to3.x... Why not throw it in and see if it helps?