Wheel Vintiques "Mopar Rallyes" (67 Barracuda)

Here's another trick, if you already have the wheel;
since the Rallys are centered by the tapered cone style nuts,
just install some large od washers on each of the studs to space the New wheels off the hubs, then gently run the wheel nuts down.
When the wheel is secured, you can go find the minimum clearance, and compare that to the thickness of the washers and then make the decision.

Btw,
Ima guessing that you are concerned about the scrub radius.
Having the vertical axis of the wheel in the same place as factory, is only important if the installed tire assemblies are also the exact same diameter as factory, else the scrub radiis will not be factory anyway.
I have run with the wheels offset up to 1/2" to the outside with no consequence that cannot be compensated for.
However, as the offset gets to be more than 1/2 inch, my car began to wander on asphalt roads and there is no alignment that I could put on it, that would fix it. I put the zero offset wheels back on, and it steered perfectly.
Next, I ordered up some 15 x 8 sbp WVs, with IIRC, a Zero offset, so a bs of 4.5", and mounted them up. What a battle that was: but it steered pretty good.
The 15s climb up over the SMALL BJs, but the zerk has to go. Also, I had to shave the BJs and the brand new wheels, little by little as I discovered some flex in the KH 4-pot disc-brake system, at full suspension droop. Eventually I got enough clearance.
But there was no way to use the clip-on style wheel weights.
To balance the tires, I first checked the balance of the wheel to find the heavy spot. Then installed the brand new tire, and re-balanced it. Next, I broke the beads and rotated the tire in the direction that I thought it needed to go. Eventually I got pretty close. I got the final imbalance with stick-on weights, moving them outside the interference zone.
Btw,
At the front, the tires rubbed on the sway bar, and at the back, the tires rubbed on the frame; both towards full lock. And, as I backed off the
4-post lift and turning, I applied the brake and promptly the tires rubbed on the bottom front corner of the wheel-openings. This I solved with a tin-snips. Because of all the rubbing I was glad when those brand new sticky tires wore out before the end of the summer, and I retired those WV Rally-wheels.
Back on in spring, went 14 x 7.5s with a 3.75 bs, with new 235/60-14BFGs. Nothing rubs and the BFGs slide predictably, so corners on the street, are just as much fun, with steering added by the rear.
When the BFGs wore out, I replaced them with Cooper Cobras with same results. And after that, I went back to the BFGs.
So, I guess, the point of my story is this; if you can, just stick with 3.75bs on 25" tires, and learn to power-slide, lol. You will be many many hours ahead of the game.