I have a 62 Chevy SWB Step, looking to do a 4/6 drop using coils and spindels. Front end has been converted to coils already. five lug all the way around, want to go with Boyd coddington Smoothie II's.
I have a 71/72 12 bolt 3.73 in the rear so it is 3/4" wider (each side) to start.
what would work best 17", 18", or 20"'s using no modifications?
what should go on front (ie: 18x8.5-5"BS) with what size tire?
and on the back?
Sorry for all the questions I am new to this wheel tire game and don't want to spend cash and time expirementing....

Thought I would ask people that would know.
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62'

3.5/5 drop SWB Fleet, PS, PB-Dsk/Drm,350/700R4
08' Chevrolet Silverado CrewCab
05'Toyota Tacoma Prerunner SR5