Ox,
I fear you are going to find that there is not enough room in front of or behind the stock rad to be able to put an electric fan worth a damn in there.
Some have cut the core support to push the radiator forward. You can gain that one inch you are looking for that way. There are a few here that have done the core support mod. A lot of work but less than moving the drivetrain back.
You really should consider the Explorer Serp. I resisted for years because I had aluminum pulleys and brackets for 20 years.
The Explorer Serp is now one of my favorite mods
Better ps pump
Better alternator
Better waterpump
Best fan you can buy (lots more room for electric fan too)
No belt squeal
Silent compared to v-belt equipment
Better in every way Hoss
I pulled out my grill last night and keeping the stock hood release,
there is no way to fit a pusher either.
Already had custom brackets for dual return sag for my HB,
and I also already have 3G mounted on new engine with SS
turnbuckle to get decent tension.
I am going to roll with that for now, just fix
shroud the best I can and maybe someday
go explr setup. I really only need explr stuff to
get electric fan/serp, for swamping
this thing in deep water, otherwise I can live
with it all the way it is.
I am still going to look at moving drivetrain back a hair,
if for no other reason to get a bit more clearance
of stock fan and radiator. Hoping that will help if
I ever get too much water near fan, from eating into
radiator.