E21/E30 5 lug hubs

I've worked out the details of converting E21 hubs from 4 x 100 to 5 x 120 and am wondering if there is enough interest out there to make it feasible to produce. My inital estimate is roughly $125.00 ea. for fronts, $65.00 - $75.00 ea. for rears (exchange). This is a professionally and soundly done modification, not some cobbled together crap.

I'm still investigating E30, but haven't yet found a db rotor that will work with the larger dia hub.

Check out this link for BMW wheels & specs for an idea of the whole new world of wheel options 5 x 120 would create. http://felgenkatalog.auto-treff.com/

Please let me know your thoughts.