Hi Jerry,
Paul Lamar tells me you might be able to build an aluminum oil pan for a 20B engine. Mine is going into a Velocity SE RG. I am planning on locating the radiator under the engine oil pan. If you would be interested in building the pan, would you please give me a holler? Thanks much,
John Bell

Hi Jerry-
Thanks for the info. Yes I do have the stock pickup. If you can mod it
to fit the new pan, I'll send it to you when I order the pan. How many
quarts does your pan hold? I will let you know about the shape as soon
as I can, but right now I am not sure since I dont have my first pass
at installation tried yet. My plan is to mount the radiator under  the
engine but havent gotten far enough to know any dimensions yet. I have
a mount plate that offsets the starter toward the side to facilitate
the radiator mounting. I will check your website and be in contact
with you as soon as I can. Thanks much!
John

John,  that is fine.  The reason the oil pans are wedge shaped is to
facilitate mounting the radiator under the engine.  Paul can provide you
with a 3D drawing showing how the pan, plenum and radiator work together
and how they will fit in your specific application. His 3D drawings are
definitely the place to start.    Pan capacity will vary with the final
dimensions but it can easily be as much as 12 Qt or more for the 20-B.
Basically the more oil the better for heat dissipation but oil has
weight so once you have enough for good cooling there is no need for
more.    Jerry