The topic below is mostly about using an IRS and having matching, late model concentric ring wheels.
viewtopic.php?f=5&t=13225Since you are using lug centric ranger bits, I suggest using a 80s lincoln town car or crown victoria spindle, brakes, outer tie rods. Get the toe adjuster too for modification if necessary. These vehicles have a steering box rather than a rack and pinion. Pinto/mustang II is another option and comes with a rack.
Stock racks are too wide from inner tie rod pivot to inner tie rod pivot because lower control arms tend to be longer on a locost. Even a miata rack is too wide. You can use a front steer rack from anything if you make an adjuster to fit the tie rod that comes with the spindle. It may be best to go aftermarket, using a rack for a rail buggy or similar application.
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Miata UBJ: ES-2074R('70s maz pickup)
Ford IFS
viewtopic.php?f=5&t=13225&p=134742Simple Spring select
viewtopic.php?f=5&t=11815LxWxHt
360LA 442E: 134.5x46x15
Lotus7:115x39x7.25
Tiger Avon:114x40x13.3-12.6
Champion/Book:114x42x11
Gibbs/Haynes:122x42x14
VoDou:113x44x14
McSorley 442:122x46x14
Collins 241:127x46x12