Hmm... Philips 68070... wasn't that based on the Motorola 68010? Doubt they are compatible though... 
Information on the 68070 isn't as available as the 68000/68010, but it's a (stripped down) clone of the 68010 designed for the Philips CD-I.
Wheter it would work inside an Amiga I don't know. I don't think it would work but it was meant more as a joke.