you clould replace the 68000 for an 68010 if can solder SMD, but the only difference is that the 68010 has an FPU and the 68000 does not, so if you want to get some preformance gain you will also have to overclock the proc by using another crystal.
hmmmm buy an A1200 with 040 or 060 card or a 040/60+ppc.
I got myself a blizz ppc 3,5 year ago never regret it, PPC roxXx!
