Depends on the year your rod is, with cars before 37, the front seat area is very narrow. You need a set of buckets that are narrow, and the seats will still touch each other and also touch the door panels. My 35 Dodge sedan had a set of buckets out of an 80s Tempo, they were comfortable and worked well.

When you get to 37 or newer, the width increases and seating options get bigger. My 48 Plymouth coupe has a bench seat out of a Dakota.

Seating in trucks tend to need to be more upright and have short backs. The worst seats I ever put in my 54 Dodge pickup were buckets from a mid 80s 5Th Ave! The seats themselves were great, but the backs laid back too much and were too high to fit under the rear window sill. My knees were almost in the dash, a very uncomfortable ride if longer then a 1/2 hour or so. I replaced those with a set of low back buckets from a swap meet. After removing the head rest, the seat backs fit under the rear window sill and could be slid back, giving me a few inches before my knees would have been against the dash, much better. My 50 got a set of short back buckets from a front drive Mopar (I think they were from an E Class car) with the adjustable backrest. Then I added an ammo box between the seats for storage. With the 48 & newer Dodge trucks, the width of the seat is generally not an issue, the angle of the back rest and the height of the seat back are issues. Buy accordingly. Gene