I have a new project that will be my next big build. It's a 35 Plymouth coupe. Plan is to use my 512 stroker motor, and maybe a 4 speed. Question is, is it better to mount the pedals under the dash, or up through the floor? Will up through the floor cause me trouble with exhaust and such? Thoughts?

1957 Dodge truck, Snakeskin Green with a little stroker motor. 1964 Plymouth Savoy wagon ( my new project)