Yea, that the block might not be able to take the power your gonna put into it!!

I was gonna go down this route when i melted mine but........i was advised not to by a few peeps on here. The cast is techinically the same but they used the blocks for different applications for a reasons, and were marked accordingly to be used for transits, grannys, cossies etc.

Prob find it would last but u gotta ask urself if its worth the risk