Matt---all the early fords (pre 1949) has a transverse multi leaf spring in the front suspension---that is to say the spring runs crossways of the frame and is made from 6 to 10 leaves all tied together with a center bolt,and runs parallel to the I-beam axle. A monoleaf spring is a leaf spring made from one peice, not multiple leaves. That is a relatively new technology, and was not available untill the 1970's or 1980's.
Maverick4440---Although a competent fabricator can splice new front peices onto the existing frame stubs, it would really be more cost effective to buy a replacement frame (they are readily available through the aftermarket, for as low as $1000.)
You can fabricate a new center mount to hold the ball of the unsplit wishbones. The reason that most people split the wishbones was to get the front end of the car lower, for a racier profile and lower center of gravity. You can not do this without splitting the wishbones and moving the anchor points out to the frame of the car, because the lowered front end will cause the frame to hit the unsplit wishbones.
The Maverick rearend is a perfect fit under a model A or 32 Ford.