gm vs ford m90 supercharger differences

hey guys, its been a while. i was wondering if anyone knew what (if any) differences there are between the ford and GM spec eaton M90s. ive been interested in swapping an L67 into and MGB for some time, but the GM spec m90's intake gets in the way of the firewall apparently. the ford spec m90's intake comes out the side, so it would likely fit...but would it bolt up to the GM 3.8? any help would be appreciated!

I don't think it bolts up directly. You would have to have an adapter fashioned.