Honing plate question

I spoke to the old boy at the foundry today. He told me to come back tomorrow, (Which I need to do for work anyway) and He'd be able to give me a definate price.
although in a stroke of luck, yesterday I bought a CNC'd billet aluminium side plate for my Aussie 265 hemi 6, and the guy from whom I bought it works at a place that has a profile cutter. So he's going to get me a price to have a plate profile cut too.
Odd are I'll go with which ever one is cheaper.
I expect the profile cut plate would need less machining than a dirty old casting though.