No.
My original 201 CI flathead 6 can do 12 MPH going up Storm King Mountain floored in 2nd gear. Why would I want a bigger engine? OK, maybe I'll add a 2x1 manifold so I gan go 14 MPH....
Nope. Thankfully. Now they make cars with disk brakes, dual brake systems, air conditioning, power steering, crumple zones, air bags...
I can change all 6 spark plugs in 90 seconds. Can you do that with a small block Chevy?
1941
Same as a P15 - here's a good link for that: P15-D24.com's article on Plymouth brakes.
No.
Why would I drop one in? What's my hurry?
Uphill or down? I've heard of people getting them up to 100, but personally I wouldn't risk it. I've had it up to 70 briefly, I routinely drive it as high a 50. Look, it was built before the interstates, and has no overdrive. If I need to get somewhere, I drive a modern car. If I want to have fun roadtripping the back roads, I take the Plymouth.
No, the laws of physics made me put the seatbelts in. And my spouse wouldn't ride in it without them.
Why don't you go contemplate a 9/16" socket wrench?!?
The music of the 1950's is way too modern for my tastes. I'll stick with the popular bands of the 30's and 40's, or my old klezmer records. And my $39 boom box is fine for that.
I should spend 2 or 3 hundred dollars to pick up AM radio?
Half the price of bias ply in that size and much safer.
A used car. So far the AACA doesn't have a class for that.
Why don't you drop a flathead six on your foot?
-roger