MX5 Sump... mad idea?

[CTWV50]

So now my build is nearly over, my mind has inadvertently been thinking of other matters/puzzles. I never liked how much the MX5 sump hangs down. I've no doubt it'll take a good solid whack or two to damage it but still. A sump guard only makes grounding out issues worse, I've found. So.... I thought about chopping sumps (it's cast alloy), dry sumps (stupid expensive). And then thought, "hang on, what's the mazda 1.6 323 sump made from?".

http://www.ebay.co.uk/itm/ADM561201-...em462464 fbe3

Steel! So chop one of them instead and fit that? Anyone see any issues with this, other than it won't bolt up to the gearbox?

This is a post IVA thing btw.