My personal preference would be not to use step plates as it seems they invite people to step on the running boards. I much prefer people to step over the boards when entering or exiting my rpu. Even the grandkids have learned to step over the boards and the car is low enough to accomidate that.

But it sounds like you are definitely going to use 'em, which is great, but it seems to me they should be placed where they would be used ( the center of the door, rather than the center of the board). Oh, and lined up with the outer edge of the board.

Personally I always use welting even though it seems to have fallen out of favor in the last little while.

Well, that's my opinion on just about everything 'cept the weather, and I think your roadster is going to look great too!

Mick