Is 1/2" leaf spring relocation worth the trouble?

DionR said
The '65-67 B-Body 8.75 is about 5/8" narrower than the '68-70 at 59.5" drum to drum. Should be about right for those wheels, I think?

An uncut explorer 8.8 is pretty close to that same width. I calculate 59.375" axle flange to axle flange, so it would depend on drum or disk for the overall width.

Yep either of those would be very close to the right width

Mojoe9955 said
The package comes with newer 295/40 Nitto G2's tires
The fronts a 18×9 +30 and 274/40
I have a stock 8.25 A, 65/67 B 8.75 to fit an A, a stock 8.75 A and a 68/70 B 8.75 the I'm getting ready to move the perches to the A body + 1/2" relocation.

The 65-67 B rear would be a good match for the 18x10 +24.

I run the 68-70B rear with the 1/2" offset with the same tire size and 18x10's that are +38. With drums on the car that combination was VERY close to the springs. The 65-67 B rear is ~8mm narrower per side, so that would put you at +30 to match my combination. And with drums I could have used an additional 6mm to the springs.

Mojoe9955 said
Will I need the 1/2" spring offset on the 65/67 B to make it work?

Yes. Otherwise you'd have too much backspace, and without that backspace the wheels/tires would hang outside the quarters. If you want 295's inside the quarters you need the 1/2" offset spring kit. And probably still some rolling/trimming on the quarter lips. Only other way to do it is hang them outside the quarters and lift the *** end of the car until nothing hits anymore.