Anyone tried a faster 030 in 030 machines?

HERE (http://cgi.ebay.com/Motorola-68030-50Mhz-SC414075RC50-cpu-Amiga-1200-4000_W0QQitemZ180418235848QQcmdZViewItemQQptZLH_DefaultDomain_2?hash=item2a01c3cdc8) is a 50mhz rated 030 on eBay. Be interesting if you could get it working in a NeXT.

$25 for an 030-50? That's not a bad price, they usually go for way more than that.

Also, I seriously doubt it'll work, mostly because the CPUs in the 040 machines aren't upgradeable either. It would be nice though, as an 030-50 is almost as fast as an 040-25.