Opinion from some of you long time Mopar racers

There is no chassis dyno near you? That's hard to believe.

Test runs will work if the chassis remains consistant. I'd still recommend an AFR and get the car scaled
I live in rural Maine, I would like to think there's a dyno around somewhere. I'll check with some of the local racers I've gotten to know over the last couple of months and see what they know. I'm hoping to weigh the car at New England Dragway this Saturday.